Why Can't Login to Facebook 2019
Assuming you have the appropriate login e-mail and password (as well as you're linked to the web) there's a couple of things that could be causing your problems:
Why Can't Login To Facebook
Are you obtaining an error message? If so, inspect the Facebook help page for descriptions as well as fixes to recognized problems.
Make certain you do not have any type of expansions or antivirus programs running that are obstructing Facebook.
Have you attempted getting rid of the app's cache? Most likely to Settings > Applications > Facebook > Clear Cache. If this doesn't function you can try clearing up data also and as a last resort uninstalling and also re-installing the app entirely.
Did you join your phone number? Make certain you type in the nation code too when visiting.
If the app is informing you to update your e-mail address, this is probably because your e-mail server is classifying your Facebook e-mails as spam.
If you've recently registered for Facebook you could need to validate your account initially. If you've recently altered your password, see to it you're trying to log in with the new password as well as not the old one.
If you're visiting using a browser, ensure you have cookies enabled and that facebook.com is contributed to your listing of risk-free websites.
Ensure you have one of the most current variation of the Facebook app for Android.