Yesterday I was experimenting with adding new users and assigning them specific shares, in the end I made it and I got what I wanted, but after a while I had to stop a container and when I tried to start it again I got a permission error, so I restarted the machine and now I'm locked out: my admin password doesn't work anymore (my user passwords do, but they're useless, also my SMB shares still work, transmission doesn't though).
I swear I didn't touch the admin account nor did anything with the admin group, what I did though is reset the permissions (through the plugin).
P.S. strangely I can still access as root trough SSH (isn't the root password the same as the "admin" one?).