I log in to Facebook and it asked me to log in again?

[Elly]

I opened Facebook and it opens at the log in page (you know, the first page where you enter your email and password to get into Facebook).
I entered my email and password.
I pressed log in, but the log in page appears again. It asked me to re-enter my email and password. But when I clicked the home logo (the top left), I got my profile already logged in. What is actually going on?
I already enabled cookies on my browser (google chrome, it is.)
I changed my password once and made Facebook logged me out of any devices I've ever logged in to.
Has anybody got the same experience? How can I fix it?
I appreciate any answers relating to this problem. Thanks in advance!