Hi,
Thanks for using our plugins. I can help out here.
Where is the access control feature coming from? I could not find it on my basic WooCommerce site are you using a plugin or am I missing something?
If you are still allowed to purchase a ticket with a restriction then I am not sure what the restriction coding needs. We do not modify the cart so I guess it needs to restrict the ticket(product) itself.
You could follow our themer’s guide:
https://theeventscalendar.com/knowledgebase/themers-guide/
And modify the ticket template in your theme:
plugins/wootickets/src/views/wootickets/tickets.php
And add the restriction coding check there.
I can try to answer some more questions about how to modify our template, but not able to provide much on the coding needed for the restriction.
Let me know though.
Thanks