It works fine for me. It’s possible that the free version maybe causing the conflict. Try deleting the free version from your WP plugin folder and your database. Then try reinstalling and activate.
Yeah sorry about that. That was for the YITH wishlist. You can easily find it for other plugin using Notepad+ for window or Coda2 for Mac and do a search in file and folder for YIT_Plugin_Licence()->register and YIT_Upgrade()->register. It will find whatever file its in.
Most of the plugin I tested are in the Include folder just with different file name.
if guys just want to hide the nag
“Warning! You didn’t set license key for the following products:
which means you’re missing out on updates and support. ‘>Enter your license key, please.”
go to /include/class.yith-wcwl-admin-premium.php and comment out line:
824: //YIT_Plugin_Licence()->register( YITH_WCWL_INIT, YITH_WCWL_SECRET_KEY, YITH_WCWL_SLUG );
838: //YIT_Upgrade()->register( YITH_WCWL_SLUG, YITH_WCWL_INIT );