Either

You can enable the feature that allows specifying the server to connect to on the login page by configuring the $cfg['AllowArbitraryServer'] directive in the phpMyAdmin configuration file.

Add the following line to enable the arbitrary server feature:

$cfg['AllowArbitraryServer'] = true;

Or

This is unlikely to help.

it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable.

PHPMyAdmin’s configuration file is located in the root directory and is called config.inc.php and in order to configure the servers to connect to, you can check this page for more information.

Here’s an example how the server configuration should look like:

$i++;
 
/* First server */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['host'] = 'mysql1.example.net';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['extension'] = 'mysql';
$cfg['Servers'][$i]['AllowNoPassword'] = false;
 
$i++;
 
/* Second server */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['host'] = 'mysql2.example.net';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['extension'] = 'mysql';
$cfg['Servers'][$i]['AllowNoPassword'] = false;