Hi,
Thanks for using our plugins. I can help out here.
I extended your license for WooCommerce Tickets to 02/23/1017, just so you know, eventually we are going to drop support for it and only have Event Tickets Plus.
Event Tickets Plus combines all 4 of the other ticketing plugins into one so it still supports WooCommerce, but it is where all new features will be added too.
For now though you should be good with WooCommerce Tickets on its own.
We have this guide to move over when you would like:
https://theeventscalendar.com/knowledgebase/moving-to-event-tickets-plus/
Cheers