Offers discount code & then claims it is invalid – Hotwire: Last Minute Hotels Review

Received email on 8/30 with a $15 discount code if I book my next Hot Rate hotel using the app before 9/6 and then the app said the code was invalid when I booked my hotel on 9/2 so I had to pay full price. What a bait and switch!
Review by D98765430987 on Hotwire: Last Minute Hotels.