Appts+ and Marketpress 3.0 not working

There seems to have been an issue with the MP upgrade to 3.0. I can't find any information on how to get these two to play nicely. I checked prior to the upgrade to make sure there aren't any major issues.

Previously I had the appointments setup as a product in MP via digital download. Now it's not working at all; the calendar show up, but nothing from there.

Here's the link: https://lavishinsequim.com/products-2/schedule-your-appointment/

Someone please advise asap...this is an integral part of our website. Thanks!