Can't login with facebook credentials or button

[MithoThoup]

Plan

Free

Country

 PH

Device

Desktop pc

Operating System

Windows 8

My Question or Issue

Yeah pretty much the subject up there. I can log in and out using my cell, but i cant for desktop. Everytime I login using the button, it opens a site with a really long link, then it gives me Error Code 3, Username or password is incorrect. The credentials are all correct btw, did it like 20 times. Tried logging out of fb and logging in using the button, did not work.

[MithoThoup]

The desktop version works fine tho