diff --git a/src/i18n/messages/de_DE.json b/src/i18n/messages/de_DE.json
index f7f17c86..623fa98a 100644
--- a/src/i18n/messages/de_DE.json
+++ b/src/i18n/messages/de_DE.json
@@ -96,9 +96,13 @@
   "sign.in.heading": "Sign in",
   "account.activation.success.message.title": "Success! You have activated your account.",
   "account.activation.success.message": "You will now receive email updates and alerts from us related to the courses you are enrolled in. Sign in to continue.",
-  "account.already.activated.message": "This account has already been activated.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "Your account could not be activated",
   "account.activation.support.link": "contact support",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Too many failed login attempts. Try again later.",
   "login.failure.header.title": "We couldn't sign you in.",
   "contact.support.link": "contact {platformName} support",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "This name will be used by any certificates that you earn.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Register with institution/campus credentials",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Enter a valid email address",
   "email.ratelimit.less.chars.validation.message": "Email must have 3 characters.",
diff --git a/src/i18n/messages/hi.json b/src/i18n/messages/hi.json
index f7f17c86..623fa98a 100644
--- a/src/i18n/messages/hi.json
+++ b/src/i18n/messages/hi.json
@@ -96,9 +96,13 @@
   "sign.in.heading": "Sign in",
   "account.activation.success.message.title": "Success! You have activated your account.",
   "account.activation.success.message": "You will now receive email updates and alerts from us related to the courses you are enrolled in. Sign in to continue.",
-  "account.already.activated.message": "This account has already been activated.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "Your account could not be activated",
   "account.activation.support.link": "contact support",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Too many failed login attempts. Try again later.",
   "login.failure.header.title": "We couldn't sign you in.",
   "contact.support.link": "contact {platformName} support",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "This name will be used by any certificates that you earn.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Register with institution/campus credentials",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Enter a valid email address",
   "email.ratelimit.less.chars.validation.message": "Email must have 3 characters.",
diff --git a/src/i18n/messages/it_IT.json b/src/i18n/messages/it_IT.json
index 504863b8..c8acee28 100644
--- a/src/i18n/messages/it_IT.json
+++ b/src/i18n/messages/it_IT.json
@@ -96,9 +96,13 @@
   "sign.in.heading": "Sign in",
   "account.activation.success.message.title": "Completato correttamente! Hai attivato il tuo account. ",
   "account.activation.success.message": "A breve ti invieremo avvisi e aggiornamenti via email relativi al corso a cui ti sei iscritto. Accedi per proseguire.",
-  "account.already.activated.message": "Questo account è già stato attivato.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "Impossibile attivare il tuo account.",
   "account.activation.support.link": "contatta il supporto",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Troppi tentativi di login falliti. Riprova più tardi.",
   "login.failure.header.title": "Impossibile autorizzare il tuo accesso.",
   "contact.support.link": "contatta il supporto {platformName} ",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "Questo nome verrà utilizzato per tutti i certificati conseguiti.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Registrati con le credenziali dell'istituzione/campus",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Inserisci un indirizzo email valido",
   "email.ratelimit.less.chars.validation.message": "Email deve avere 3 caratteri.",
diff --git a/src/i18n/messages/pt_PT.json b/src/i18n/messages/pt_PT.json
index 19b50f28..df110b40 100644
--- a/src/i18n/messages/pt_PT.json
+++ b/src/i18n/messages/pt_PT.json
@@ -1,13 +1,13 @@
 {
   "top.discount.message.15.off": "desligado",
   "top.discount.message.body": "Get {discount} your first verified certificate* with code",
-  "start.learning": "Start learning",
+  "start.learning": "Começar a aprender",
   "with.site.name": "with {siteName}",
-  "code.copied": "Code copied",
+  "code.copied": "Código copiado",
   "complete.your.profile.1": "Concluído",
-  "complete.your.profile.2": "your profile",
-  "welcome.to.platform": "Welcome to {siteName}, {username}!",
-  "side.discount.message.15.off": "off",
+  "complete.your.profile.2": "o seu perfil",
+  "welcome.to.platform": "Bem vindo a {siteName}, {username}!",
+  "side.discount.message.15.off": "desligado",
   "certificate.message": "certificate* with code",
   "side.discount.message.body": "Get {discountText} your first verified {lineBreak} {certificateMsg}",
   "institution.login.page.sub.heading": "Choose your institution from the list below",
@@ -30,16 +30,16 @@
   "eight.characters": "8 Characters",
   "password.sr.only.helping.text": "Password must contain at least 8 characters, at least one letter, and at least one number",
   "tpa.alert.heading": "Almost done!",
-  "login.third.party.auth.account.not.linked": "You have successfully signed into {currentProvider}, but your {currentProvider} account does not have a linked {platformName} account. To link your accounts, sign in now using your {platformName} password.",
+  "login.third.party.auth.account.not.linked": "Iniciou sessão com sucesso em {currentProvider}, mas a sua conta {currentProvider} não está vinculada a uma conta {platformName}. Para vincular as suas contas, inicie sessão através da sua palavra-passe em {platformName}.",
   "register.third.party.auth.account.not.linked": "You've successfully signed into {currentProvider}! We just need a little more information before you start learning with {platformName}.",
   "error.notfound.message": "A página que procura não está disponível ou há um erro no URL. Por favor, verifique o URL e tente novamente.",
   "forgot.password.confirmation.message": "We sent an email to {email} with instructions to reset your password.\n          If you do not receive a password reset message after 1 minute, verify that you entered\n          the correct email address, or check your spam folder. If you need further assistance, {supportLink}.",
   "forgot.password.page.title": "Esqueceu a Senha | {siteName}",
   "forgot.password.page.heading": "Reset password",
   "forgot.password.page.instructions": "Please enter your email address below and we will send you an email with instructions on how to reset your password.",
-  "forgot.password.page.invalid.email.message": "Enter a valid email address",
+  "forgot.password.page.invalid.email.message": "Introduzir um endereço de correio electrónico válido",
   "forgot.password.page.email.field.label": "Email",
-  "forgot.password.page.submit.button": "Submit",
+  "forgot.password.page.submit.button": "Submeter",
   "forgot.password.error.alert.title.": "We were unable to contact you.",
   "forgot.password.error.message.title": "Ocorreu um erro.",
   "forgot.password.request.in.progress.message": "O seu pedido anterior está a ser processado, por favor tente novamente dentro de momentos.",
@@ -47,7 +47,7 @@
   "forgot.password.invalid.email": "Ocorreu um erro.",
   "forgot.password.invalid.email.message": "O endereço de email fornecido não está formatado correctamente.",
   "forgot.password.email.help.text": "O endereço de e-mail que usou para se registar em {platformName}",
-  "confirmation.message.title": "Check your email",
+  "confirmation.message.title": "Verifique o seu email",
   "confirmation.support.link": "contact technical support",
   "need.help.sign.in.text": "Need help signing in?",
   "additional.help.text": "For additional help, contact edX support at ",
@@ -96,9 +96,13 @@
   "sign.in.heading": "Iniciar Sessão",
   "account.activation.success.message.title": "Sucesso! Você ativou a sua conta.",
   "account.activation.success.message": "Receberá agora actualizações por e-mail e alertas nossos relacionados com os cursos em que está inscrito. Inicie a sessão para continuar.",
-  "account.already.activated.message": "Esta conta já foi ativada.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "A sua conta não pôde ser ativada",
   "account.activation.support.link": "contato de suporte",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Muitas tentativas de login sem sucesso. Tente novamente mais tarde.",
   "login.failure.header.title": "O seu acesso não foi possível.",
   "contact.support.link": "contactar o suporte {platformName}",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "This name will be used by any certificates that you earn.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Registo com credenciais da instituição/campus",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Enter a valid email address",
   "email.ratelimit.less.chars.validation.message": "O e-mail deve ter 3 carateres.",
diff --git a/src/i18n/messages/ru.json b/src/i18n/messages/ru.json
index f7f17c86..623fa98a 100644
--- a/src/i18n/messages/ru.json
+++ b/src/i18n/messages/ru.json
@@ -96,9 +96,13 @@
   "sign.in.heading": "Sign in",
   "account.activation.success.message.title": "Success! You have activated your account.",
   "account.activation.success.message": "You will now receive email updates and alerts from us related to the courses you are enrolled in. Sign in to continue.",
-  "account.already.activated.message": "This account has already been activated.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "Your account could not be activated",
   "account.activation.support.link": "contact support",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Too many failed login attempts. Try again later.",
   "login.failure.header.title": "We couldn't sign you in.",
   "contact.support.link": "contact {platformName} support",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "This name will be used by any certificates that you earn.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Register with institution/campus credentials",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Enter a valid email address",
   "email.ratelimit.less.chars.validation.message": "Email must have 3 characters.",
diff --git a/src/i18n/messages/uk.json b/src/i18n/messages/uk.json
index f7f17c86..623fa98a 100644
--- a/src/i18n/messages/uk.json
+++ b/src/i18n/messages/uk.json
@@ -96,9 +96,13 @@
   "sign.in.heading": "Sign in",
   "account.activation.success.message.title": "Success! You have activated your account.",
   "account.activation.success.message": "You will now receive email updates and alerts from us related to the courses you are enrolled in. Sign in to continue.",
-  "account.already.activated.message": "This account has already been activated.",
+  "account.activation.info.message": "This account has already been activated.",
   "account.activation.error.message.title": "Your account could not be activated",
   "account.activation.support.link": "contact support",
+  "account.confirmation.success.message.title": "Success! You have confirmed your email.",
+  "account.confirmation.success.message": "Sign in to continue.",
+  "account.confirmation.info.message": "This email has already been confirmed.",
+  "account.confirmation.error.message.title": "Your email could not be confirmed",
   "login.rate.limit.reached.message": "Too many failed login attempts. Try again later.",
   "login.failure.header.title": "We couldn't sign you in.",
   "contact.support.link": "contact {platformName} support",
@@ -114,18 +118,21 @@
   "registration.username.label": "Public username",
   "registration.password.label": "Password",
   "registration.country.label": "Country/Region",
-  "registration.opt.in.label": "By creating an account, I agree that {siteName} may send me marketing messages.",
+  "registration.opt.in.label": "I agree that {siteName} may send me marketing messages.",
   "help.text.name": "This name will be used by any certificates that you earn.",
   "help.text.username.1": "The name that will identify you in your courses.",
   "help.text.username.2": "This can not be changed later.",
   "help.text.email": "For account activation and important updates",
   "create.account.button": "Create an account",
+  "create.account.for.free.button": "Create an account for free",
   "create.an.account.btn.pending.state": "Loading",
   "registration.other.options.heading": "Or register with:",
   "register.institution.login.button": "Institution/campus credentials",
   "register.institution.login.page.title": "Register with institution/campus credentials",
   "empty.name.field.error": "Enter your full name",
   "empty.email.field.error": "Enter your email",
+  "empty.username.field.error": "Username must be between 2 and 30 characters",
+  "empty.password.field.error": "Password criteria has not been met",
   "empty.country.field.error": "Select your country or region of residence",
   "email.invalid.format.error": "Enter a valid email address",
   "email.ratelimit.less.chars.validation.message": "Email must have 3 characters.",