Are you connected to the net? Haha, seriously though, are you?
Assuming you have the appropriate login email and also password (and also you're linked to the web) there's a few things that might be triggering your issues:
Error Logging Into Facebook
Are you getting a mistake message? If so, inspect the Facebook help page for descriptions and fixes to recognized issues.
Ensure you don't have any kind of extensions or antivirus programs running that are blocking Facebook.
Have you tried clearing the application's cache? Most likely to Settings > Applications > Facebook > Clear Cache. If this doesn't work you can try clearing up data as well and also as a last option uninstalling and re-installing the application totally.
Did you register with your contact number? Ensure you enter the country code also when visiting.
If the application is informing you to update your e-mail address, this is more than likely due to the fact that your email server is labeling your Facebook emails as spam.
If you have actually just recently signed up for Facebook you might require to verify your account first. If you've recently altered your password, make certain you're attempting to log in with the new password and also not the old one.
If you're logging in by means of an internet browser, see to it you have cookies allowed which facebook.com is included in your list of secure sites.
Ensure you have the most recent version of the Facebook app for Android.
