It has been quite reliable to me. I sometimes show the boothling the image of my offer on my app and each time the boothling eventually finds the offer on the computer and gives me the thing. Never once have I had an offer on my app that did not lurk into the system. That said, I also use physical mail as it does have many details, including explaining when a promo is particularly juicy. Sometimes the app just states "Reel Rewards" offer but does not mention the amount-- the mail will state the amount. Or that I have a "cruise offer" but only the mail will explain whether it is an "inside" stateroom or "ocean view."