You can reset the password for accessing admin tools using the following command:
ee secure --auth
and if your mysql’s root credential are not working maybe you’ll have reset it ,although you still can login using db credentials in wp-config.php to manipulate site-specific database.
It’s been a long time, and we haven’t heard from you. It looks like your issue is resolved.
I am closing this support topic for now. Feel free to create a new support topic if you have any queries further.