JetElements crashing Elementor

I use JetElements for a lot of testimonial content on my site. Now it doesn’t seem to be compatible with Elementor, as when I go to edit with Elementor I receive this message:

There has been a critical error on this website. Please check your site admin email inbox for instructions. If you continue to have problems, please try the support forums.

I’ve had to disable the plugin. Any idea why this is happening?

The page I need help with: [log in to see the link]