Hello judyvedder,
Thanks for reaching out to us!
This definitely a strange issue and I definitely understand the frustration. Hopefully we can get this cleared up for you quickly.
First off, since the plugins were updated, can you make sure that both The Events Calendar and Events Calendar Pro are the latest versions (3.7)? Can you also verify for me that the issue is a duplication of the display of events and not that there are now multiple versions of these events displaying within the dashboard?
Also, can you follow the Testing for Conflicts procedure to see if there is a plugin or child theme conflict. If it is a conflict, this can help us to narrow down what the conflict is and if there is anything we need/can do to ensure that our plugin works your plugins.
I’m sorry I wasn’t able to give you a direct response however I hope this was able to point you in the right direction.
Thanks!