I can't access my Facebook messenger
If you're having trouble logging into Messenger, please make sure that you have the most up-to-date version of the Messenger app installed. To do this, go to your phone or tablets's app store (example: Apple App Store, Google Play Store) and download any updates.
If you're having trouble logging into your Facebook account, here are some things you can try.
Try recovering your Facebook account
If your password isn't working or you don't remember your password