Like the app, the questions are fair, the strategy is intriguing, but certain people (prove to me they are not bots, or improvements can be made to see to it the result is not guaranteed) in the queue makes the app far less enjoyable than it could be.
It gets boring to compete if you are 99% sure that some people have 1,000,000 coupons and you have maybe 10k and those particular accounts that seemingly are on site 18/7, as if they are doing nothing else.
Either staying away from individual competitions because of the presence of certain people (bots?) or knowing you are not going to try to go all out, can't be good for site traffic. This creates a perception problem.
Improvements are needed. I don't know what would be great improvements, just they are needed.