Hello!
First off, thank you for your purchase and welcome to our premium plugin support forums! The first step in this instance is to review the Testing for conflicts guide in it’s entirety so we can locate the source(s) of conflict.
I’d also look to see if you have any existing template overrides. Look inside your theme folder for a folder named tribe-events. Whatever files you have in that folder will override the files in our plugin folders. Chances are there is missing or outdated code needing attention so the ticket section displays on the front end.
Keep me updated on your findings and we’ll continue investigating. Thanks again and have a pleasant remainder of your day. Cheers!