after perform below steps
the Warning! You didn’t set license key for the following products: error will come
– Open the file /yith-xxxxxxxxxx/plugin-fw/licence/lib/yit-licence.php and go to line 349
– change “return false;” to “return true;”
This means adding // to the front of that line or /* */ on both ends of that line.
it should look like this:
// add_action( ‘admin_notices’, array( $this, ‘activate_license_notice’ ), 15 );
or
/* add_action( ‘admin_notices’, array( $this, ‘activate_license_notice’ ), 15 ); */
