Here we can see a conversation from the Modern Event Calendar’s support desk which is about Booking System
Register button is not showing even if I've set ticket limits in the event.
Firstly, please look at your MEC single event edit page. The event should not be expired. Then go to the booking section and check the ticket, you should have a ticket for showing button, also, please go to WordPress Dashboard > Appearance > Widgets and check MEC Sidebar. You need to enable the register button on single event sidebar items
We would like to be able to display early bird pricing that shows up until a specified date. Is that possible?
Yes, you can use this option (Price Per Date) in edit event page