-o, --old-protocol
Use the 3.20 protocol for compatibility with some very old clients.

Що за чудо е това дето си го инсталирал?

Не е точно същата грешка ама все пак прочети това:

A.2.13 Ignoring user Error

If you get the following error:

Found wrong password for user: 'some_user@some_host'; Ignoring user

this means that when mysqld was started or when it reloaded the permissions tables, it found an entry in the user table with an invalid password. As a result, the entry is simply ignored by the permission system.

Possible causes of and fixes for this problem:

* You may be running a new version of mysqld with an old user table. You can check this by executing mysqlshow mysql user to see if the password field is shorter than 16 characters. If so, you can correct this condition by running the scripts/add_long_password script.
* The user has an old password (8 characters long) and you didn't start mysqld with the --old-protocol option. Update the user in the user table with a new password or restart mysqld with --old-protocol.
* You have specified a password in the user table without using the PASSWORD() function. Use mysql to update the user in the user table with a new password. Make sure to use the PASSWORD() function:

mysql> update user set password=PASSWORD('your password')
where user='XXX';

Linux is like a wigwam - No Windows, No Gates, Apache inside