David: no, you shouldn’t have had to update to 1.6.5. These were essentially two separate plugins before we moved to 2.0:
* The free The Events Calendar 1.6.5 plugin, when jumping to 2.0, DID have a migration process that was somewhat complex.
* The (paid) Events Calendar PRO 1.3.3 plugin was a separate product that didn’t require The Events Calendar to run. When activating the 2.0 code alongside 1.3.3, as per this article (https://theeventscalendar.com/migrating-from-events-calendar-1-6-5-to-2-0/), the experience was intended to be as seamless as possible.
That’s what I’m confused by here, is that it sounds like you experienced a problem some free users encounter that you shouldn’t have seen as a PRO user. I will need to look into this myself, from the looks of things; can you revert back to the 1.3.3 build and send me a set of admin credentials to pro /a/ tri.be, with a link to this thread? Please also confirm that you don’t mind me attempting the update on my end with your site…
Thanks for your patience, David.