Error moving database to remote Server

I’m trying to move the entire database to a remote MySQL Server. I’ve done a sqldump and the remote server mysql is populated with all databases. I’ve follow the instructions in https://easyengine.io/docs/remote-mysql/ but when I try to create a new site, the first sequence says:

Adding repository for MySQL, please wait...
Updating apt-cache, please wait...
Installing packages, please wait...
Downloading MySQLTuner           [Done]
Reload : mysql     [OK]
Running pre-update checks, please wait...

And the /etc/mysql/conf.d/my.cnf file overwrite itself with new user and password and deleting host.

Can anyone help me please?