This isn't really a website issue because I'm having the same issue by phone but I wasn't sure where to put it and didn't think it worth a new thread.

I am trying to book 4 nights at a property that charges 25k per night. I have two 35k certs. I booked a reservation online choosing to use two certs and 50k points and I get a confirmation and booking. However, it does not take the certs and does not deduct the points from my account. I spent 45 minutes on the phone with marriott yesterday largely on hold while a "supervisor" allegedly worked on the problem. They couldn't fix it. They suggested I try to book at it as 2 nights using certs and two nights using points. So, I tried that. Interesting, the reservation for two nights using certs booked fine and I have a confirmation and the certs are now gone from my account. However, the points booking will not take. I have a confirmation but the points haven't been deducted. When I view the reservation on line it says "Great! You've earned all the points you need." Then it gives me a link to "Deduct your points now." But then I get an error message when I click on it.

Marriott has no idea what to do. Anyone have the issue? Any guidance I can give? Twitter has been useless -- they say they won't touch reservations and I have to call and then I call and it's a long wait with someone who doesn't even understand the issue and can't see what I see.