Go to functions.php and add
update_option( 'gt3_registration_status', 'active' );
update_option( 'gt3_registration_supported_until', '12.12.2030' );
update_option( 'gt3_supported_notice_srart', false );
update_option( 'sdfgdsfgdfg' , 'Product is activated!' );
below the <?php
It should look like this:
<?php
update_option( 'gt3_registration_status', 'active' );
update_option( 'gt3_registration_supported_until', '12.12.2030' );
update_option( 'gt3_supported_notice_srart', false );
update_option( 'sdfgdsfgdfg' , 'Product is activated!' );