Last night, I was trying to book an AC hotel for an upcoming two-night stay. Nights were 33K + 37K, so the system asked at checkout if I wanted to use a 35K award that expires well after the night in question and pay 35K points. I chose to do so but noticed that I never received a confirmation for the booking.

I checked the reservation today and it exists, but the confirmation lists it as a Points Advance stay for 70K with no certificate attached. I have the points already in my account, so that shouldn't be happening.

I canceled this reservation, rebooked with the same method, and got another confirmation with no certificate attached as a Points Advance. Canceled again.

Decided to try booking it one night at a time. Went to the first night, saw that the price was 33K points, got to checkout .... and the 35K certificate won't populate in my account. Only a 50K certificate shows up. The 35K certificate is still there - it shows as an option if I try to book two nights - but it won't show up for one night.

Called Bonvoy and got an excellent, thoughtful agent who tried the same thing I did ... and got the same results. She asked to put me on hold so she could get assistance. When she came back, she said "it's a known issue" and to try again in a few hours.

So, just posting here: if you've made a reservation using a certificate or some combination of certificate and points in the last day or so, I'd encourage you to check the reservation and make sure it's as you planned.