We've been using Matukio for free events and now need to transition to 'paid' events (and specifically purchased Matukio because it would allow payment with Alpha User Points).

The checkout process seems to work (i.e. won't let you pay with AUP if you don't have enough points).
However, if you do pay with points it never deducts the points from the user's point list (and doesn't create a 'transaction' in AUP).

I'm not completely familiar with the way these payment plugins work.
Is this a plugin that Matukio created (and maintains)?

How can I get this working?