Не могу зайти в phpMyAdmin имя верно, пароль тоже
Выдает ошибку:
I get an "Access denied for user: 'root@localhost' (Using password: YES)"-error when trying to access a MySQL-Server on a host which is port-forwarded for my localhost.

When you are using a port on your localhost, which you redirect via port-forwarding to another host, MySQL is not resolving the localhost as expected.
Erik Wasser explains: The solution is: if your host is "localhost" MySQL (the commandline tool 'mysql' as well) always tries to use the socket connection for speeding up things. And that doesn't work in this configuration with port forwarding.
If you enter "127.0.0.1" as hostname, everything is right and MySQL uses the TCP connection.