Good evening Stacey and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the issue you have experienced while updating the plugins to the latest versions. Yikes!
I would love to help you with this topic.
For the record “Schedule multiple events” is the new name for “Add another rule”.
As a next step, after a database backup, could you try the following ?:
- Make sure all caches are emptied and that WP Super Cache is shutdown
- Upgrade only the Events Calendar and the Events Calendar Pro (not Community Events)
- Try deactivating and reactivating the Events Calendar Pro plugin.
Let me know if that helps.
Have a great day!
Geoff B.