Hi Ronald,
Sorry to see you’re not able to get the Eventbrite ticket section displaying on your events. I checked on a test event I created recently but I’m not experiencing the same behavior as you. Please see the screenshot below of my test event:

I see you checked ‘Yes’ to reverting back to the default WordPress theme and deactivating all plugins other than ours as instructed in the Testing for conflicts guide, but can you please confirm this?
If so, it might be best you set up a fresh WordPress installation where you can fully troubleshoot the issue. Make sure you have only the default WordPress theme and The Events Calendar installed and activated on the test site. Please review our Using One License for Live and Dev Sites and Moving Your License Keys tutorials for more information.
Please keep me updated and have a pleasant rest of your day. Cheers!