No customer with email @ globo.com is able to access my services via OAuth. In the past they all clicked on "Login with Google", entered the credentials of globo.com, and logged in normally. They are now being redirected to the globomail site, and are no longer redirected back.
I talked to the support of globo.com, and here is the magnificent answer: "Thank you for having waited, The partnership of globo.com with Google services (YouTube, Google+, Blogger and others) has ended it will be necessary to change the email from the globe to the email with another domain"
Does this mean that all my thousands of Globo.com customers will be harmed? Will they have to change accounts one by one, create a Gmail, register a password, all that?
How to solve this without harming all my clients?
Use Rails + Devise + Omniauth.