Hey Linda,
Thanks for doing those tests!
I’m sorry to say this, but unfortunately I think the next best step from here is a more thorough set of troubleshooting steps we have that will help reveal or rule out a code conflict on your site.
I think this is worthwhile because on my local testing site, with all the same Tribe plugin versions that you have, I cannot recreate this issue.
These troubleshooting steps can be found here → https://theeventscalendar.com/knowledgebase/testing-for-conflicts/
I’d recommend checking those out and doing each step as recommended. Let us know what you find by going through this process!
Thank you,
George