Using your Facebook account to verify your identity to third-party websites, such as Hotels.com, is a fantastic convenience that keeps you from having to create and remember yet another website login as well as reusing passwords.
In short, it’s awesome– until it stops working.
For several days.
Who has time for that frustration?
Here’s a workaround to save your time and sanity:
When you sign in to third-party sites with a social networking account, chances are that third-party site has creating an account for you because they need a user with which to associate their data (in this case, hotel transactions). This account is different in that they don’t share the login credentials with you because they are relying upon [Facebook/Twitter/whatever] to validate your identity instead.
But if you use the “Forgotten Your Password?” feature on Hotels.com website, they will send a link to the email address associated with your account that allows you to change your password.
Just don’t pick a stupidly obvious password such as “123456”, or I’ll “unfriend” you for being an idiot.
Now that you know both the email address and password for your Hotels.com account, you can log in directly and bypass that broken “Sign in with Facebook” feature.