Update massively slowed down site

Hello! I didn’t realize my premium add-on had expired last August so I just renewed it and updated both the regular plugin and the premium one. Immediately after my shop is now running at a snail’s pace, sometimes over 50 seconds to load a shop page!

These were the only two plugins I updated and had been updating inventory quantities for hours before and it had been fine. I’ve tried other websites and they load fine so I feel like it must be the plugin — help!

Thanks!

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