Why Can't Login to Facebook 2019
Assuming you have the appropriate login e-mail and password (and also you're connected to the web) there's a couple of things that may be creating your issues:
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 known problems.
Make sure you do not have any type of expansions or antivirus programs running that are obstructing Facebook.
Have you attempted removing the app's cache? Go to Setups > Apps > Facebook > Clear Cache. If this does not work you can attempt clearing up data as well and as a last option uninstalling and also re-installing the app entirely.
Did you join your contact number? Make sure you type in the country code also when logging in.
If the application is telling you to upgrade your email address, this is more than likely because your email web server is labeling your Facebook emails as spam.
If you've lately registered for Facebook you might require to validate your account first. If you've lately transformed your password, make sure you're trying to log in with the new password as well as not the old one.
If you're logging in through an internet browser, ensure you have cookies made it possible for which facebook.com is added to your listing of risk-free websites.
Ensure you have one of the most current version of the Facebook app for Android.