Are you linked to the web? Haha, seriously however, are you?
Assuming you have the right login email and also password (and also you're connected to the net) there's a few points that might be creating your issues:
Facebook Login Issues
Are you getting an error message? If so, inspect the Facebook help page for explanations and also fixes to known problems.
See to it you don't have any type of extensions or antivirus programs running that are obstructing Facebook.
Have you tried clearing the application's cache? Go to Settings > Apps > Facebook > Clear Cache. If this does not function you can attempt clearing data also and as a last resort uninstalling and re-installing the application totally.
Did you register with your telephone number? Make sure you enter the country code too when logging in.
If the application is informing you to update your email address, this is probably due to the fact that your e-mail web server is identifying your Facebook emails as spam.
If you've just recently signed up for Facebook you may require to confirm your account first. If you have actually just recently changed your password, ensure you're attempting to visit with the brand-new password and not the old one.
If you're logging in using a web browser, see to it you have cookies allowed and that facebook.com is contributed to your checklist of safe sites.
See to it you have the most recent version of the Facebook app for Android.
