That's not correct. You have to book the lowest rate from the website, which often is a prepaid rate, even if the rate you want to match against ist completely flexible. I had a claim refused because I booked the best flexible rate. On the other hand, another poster reported he had the claim refused because the other rate was flexible, whileas his was not (however, the T&C never talk about the restrictions of the rate, only the room, so I agree with the way I was treated).

HTB.