I had an upcoming reservation with Crowne Plaza Times Square NY in March for just over a week, I tried to adjust the dates from the link on the original reservation email and it failed to work. On the IHG website, when I cancelled the whole reservation, the cancellation confirmation showed different rates to my original reservation email and would have cost an extra USD109 if I had stayed and not checked the bill to my booking. I assume they have the correct rates I booked, but obviously not.