I’m sorry to hear about this @Earl! Unfortunately, in my experience this has usually come up because of conflicts with code from your theme or from other plugins on your site 🙁
Before jumping to that conclusion though, can you first head to Events > Settings > Display in your wp-admin, and then scroll down to where you see the “Datepicker date format” option? Here’s a screenshot of that specific option for reference: https://cloudup.com/cmSUir2f-Lm
Try out different date formats here and see if this effects the issue at all; I know this seems like an odd, trivial detail, but this was a bug in the past so I just want to see if it’s at play here at all.
If not, then can you share your system information with us? Here’s how to do that → https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Thank you!
George