Unable to login to the Web Admin Center

Hello there ! It’s been a few months i am using FreePBX in its Self-hosted version. I don’t know, but for some reasons, i am no longer able to login to the admin Web interface. I’ve tried some alternatives like “fwconsole unlock ” from the CLI and i’ve also tried to update directly the “ampusers” table in the Database. Unfortunately, none of them was successfull.

Please, can someone help me ?