Hi,
Thanks for Purchasing our plugin.
There maybe a way to add events created as a custom post type to the calendar, but it would take a significant customization to do that and not something we can support.
We have our themer’s guide to modify templates that might help you display custom fields the way you want them to:
https://theeventscalendar.com/knowledgebase/themers-guide/
This is the custom post type for our events:
tribe_events
And the Event Category is
tribe_events_cat
You could use something like Advanced Custom Fields to create the custom fields.
Let me know if you have any follow up questions.
Thanks