Learning to Null

[Funesto]

Hello!
I downloaded this free plug-in but I guess that there is inside also the premium version. Now I am curious .. how would you begin trying to null this?

I have this piece of code

 if ( !isset( $gt_fs ) ) {
                // Activate multisite network integration.
                if ( !defined( 'WP_FS__PRODUCT_594_MULTISITE' ) ) {
                    define( 'WP_FS__PRODUCT_594_MULTISITE', true );
                }
                require_once dirname( __FILE__ ) . '/vendor/freemius/wordpress-sdk/start.php';
                $gt_fs = fs_dynamic_init( array(
                    'id'             => '594',
                    'slug'           => 'glossary-by-codeat',
                    'type'           => 'plugin',
                    'public_key'     => 'pk_229177eead299a4c9212f5837675e',
                    'is_premium'     => true,
                    'has_addons'     => true,
                    'has_paid_plans' => false,
                    'menu'           => array(
                    'slug'    => 'glossary',
                    'contact' => false,
                    'parent'  => array(
                    'slug' => 'edit.php?post_type=glossary',
                ),
                ),
                    'is_live'        => true,
                ) );
                
                if ( $gt_fs->is_premium() ) {
                    add_action( 'init', static function () {
                        load_plugin_textdomain( GT_TEXTDOMAIN, false, dirname( plugin_basename( __FILE__ ) ) . '/languages' );
                    } );
                    $gt_fs->add_filter( 'support_forum_url', static function ( $wp_org_support_forum_url ) {
                        //phpcs:ignore
                        return 'http://support.codeat.co/';
                    } );
                }
            
            }

and as you can see I just turned "is premium" to true but of course is not enough! Do that "Public Key" has a role in this?
Which are steps to try to null something?

Thanks!

 

[reminiscence666]

you need deep understanding of php in order to nulled
altough sometimes it may be encripted and some script need to encoded

 

[whitetigerdk]

Try changing
if ( $gt_fs->is_premium() ) {
to
if ( !$gt_fs->is_premium() ) {

And let us know what happens..
Normally it would be something like:
If premium then run scenario 1.. else run scenario 2
Change to: if not premium run scenario 1...