Can't connect with my facebook account

Hey when i want to connect with my fb account, i can see “connect with google” but “connect with facebook” is not there. The truth is : the button is present for a less than a second then disappear…

Can you take a screenshot? I don’t understand how the button can disappear.

You can send the picture at coders [at] Can you also tell us what’s your browser and screen resolution?

Thanks a lot.