RSVP Pro Clashing with Thrive Architect

Hi, I’ve used the free version of RSVP plugin for years now. It worked well for what it could offer but now I bought the pro version and it has crashed my site several times.

My website is built using Thrive Architect and this worked well with the free version of RSVP plugin but now when I try activate both Thrive and RSVP the website crashes. I tried to build my event aside from Thrive but I aslo have the challenge of not being able to create custom question/fields like I could in the free version.

I sent an email on the rsvppro website but I haven’t gotten any response. also the support page doesn’t work.

May you please assist as I have 2 critical events that I need the plugin working ASAP