Attention! There are hackers in the forum! After I asked for a font suggestion, someone suggested a name and when accessing said that I needed to log in to Facebook, when I logged in I had nothing. A little while later they hacked my FB. Changing profile photo, background and making a post. Nothing serious or suspicious. Viewing my login record, I saw that they accessed from "Santa Tecla, El Salvador. Samsung J1 ACE". After that the comment has been deleted and can not remember the nickname.

-Versury

The posts you're talking about have been removed extremely fast thanks to the extraordinary moderators. They didn't stay for more than a few minutes. It was a phishing site that looked like the Facebook login page, but the address was very different. You should revoke their access, which can be done by going in the Facebook settings, and then "Security and connection", and find the device they used and revoke its access. You should also change your password on Facebook afterwards, and on every other website where you use this email/password combination - which is never a good idea. You should also always check the address of a website before entering your details, because it can be very easy to create a "fake" page that looks like the real one.

The scamming website probably asked you for profile writing authorizations, which you probably granted without noticing.