Does not work with Gravity Forms

This plug-in was a good idea and I thought it had very easy setup. Just know that if you use Gravity forms for product options this plug-in will not work for you. It also took 4 days for support to respond to my concerns. Be careful as I purchased a lifetime license which is of no use to me and since it took over 30 days for me to find the problem they will not offer a refund. My fault but still.