Thought I would update my site as my original dev is gone and it hasn’t been touched since 2017. It was working fine. Well, I updated Calandarista and WordPress. Calandarista is now not working so I deleted it and realize I don’t even know what v. I had running before to reset it. Did not back up site before going on the dashboard and banging away. I rely on Calandarista to book my appointments for my service job. Wish I had not done this!
Can you not download calandarista again and reinstall it? Also, does your host have rolling backups?