I had a remaining free night from the Sweet Dilemma promotion last fall/winter that I ended up not using. I decided to burn it at the local Intercontinental for today (final day of redemption), but the website would not allow a booking. In case anyone else is trying to use their remaining free night, Priority Club is supposedly working on the issue. I called Priority Club and just asked them to book the night. They did so by expiring one of the free night codes, crediting my account with 40K points and then deducting 40K points. Hope the fix the website glitch soon, but wanted to post this in case anyone else is facing a similar problem.