I have used this service four times...
I have used this service for times, with for family members each time, and it keeps getting rejected by Delta for one reason or another. I have contacted their customer support four times, and have not heard back from them even once to this day. For this service to work, they would need to book the tickets from a different airline than I'm flying, and unfortunately, that isn't an option right now. It seems like a great idea, and I really want to keep trying, but I can’t blow any more money until they figure it out on their end.