App needs one thing

I love using the website but since this is an app review, I have to say one thing bothers me. When I first signed up on the website, it gave me the option to sign in with Facebook. I used that and it automatically setup my account. But when I try to sign in on here, it doesnt have the option and I find it quite annoying because I dont know what to sign in with. I used the same email and password I have for my Facebook but nothing worked. But besides that, the app is fine.... Annoying but fine. Add the sign in through Facebook option.

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