My Catch Fullscreen Pro theme keeps crashing when I try to edit

I am using EasyWP login on Namecheap. All of my plugs are updated and I am running the latest version of WP. When I try to login to the admin interface I get this message: There has been a critical error on this website. Please check your site admin email inbox for instructions. Learn more about troubleshooting WordPress. My Namecheap support team (who are excellent BTW) said the logs show it is the Catch Fullscreen Pro that is causing the crashing. My website is: purejamaican.com Thanks in advance for any help Scott