Version 18.1.6 of the OmceanBooking app is now available with these fixes:

Add-on charges on repeat and grouped bookings: When a customer books several dates or a grouped booking and pays with a pass, paid add-ons are now charged for every date, every attendee for per-person add-ons, and every booking in the group. Before, only one date or one booking was charged. This also applies when the customer buys a new pass during checkout.
Gate page checks the right subscription: The Gate page now checks your Gate subscription, and if Gate is not turned on, Enable now takes you to Gate in your feature list.
Equipment class activity log: The class activity log for your equipment now shows the right entries.