I know there was an issue for certain hotels where the stays/points wouldn't post. For the first several weeks of January, I had to call in each week to have the stay posted (it wouldn't do it automatically even though it was under my rewards account). I'm not sure if that's what they're referring to or not.

As for me - It appears that I received the 500 points mentioned above...but I did not receive any other adjustments to my account.