Opening port 3306 but not working

Hi, i’m running Cyberpanel 2.3.4 on Ubuntu 20.04.
I need to connect remotely to a database, so I tried to open port 3306 for a specific IP (or even for eveyone). I added port 3306 in CSF page from cyberpanel, but from seems like port is still closed.
I already created the database user to login from remote.
I don’t understand what else should I do to make it work.

Can anyone help me? Thanks