Hello Volkan.

Thank you for your purchase.

Our plugin is using PDO_SQLSRV driver.

Can you please check do you have installed and enabled PDO extension (pdo_sqlsrv) on your server?

If your WordPress is hosted on Microsoft SQL Server that have drivers for PHP: SQLSRV extension or PDO_SQLSRV extension you will need to modify file wp-content/plugins/wpdatatables/config/config.inc.php and around line 65 find this line of code:

$wdtMsSqlDriver = [
'sqlsrv' => ['active' => false],
'dblib' => ['active' => true, 'version' => '7.0'],
'odbc' => ['active' => false, 'driver' => '{ODBC Driver 17 for SQL Server}'],
];

and change it to look like this:

$wdtMsSqlDriver = [
'sqlsrv' => ['active' => true],
'dblib' => ['active' => false, 'version' => '7.0'],
'odbc' => ['active' => false, 'driver' => '{ODBC Driver 17 for SQL Server}'],
];