PrizeRebel is pretty straight forward. Complete survey and offerwall, earn points, cash out for rewards. Theres no much else to say about it. I've been a member of PrizeRebel for 2 years now and cashed out plenty of rewards especially amazon gift card.
Personally, I understand some user frustration, especially when encountering a disqualification or technical error, but from my experience and understanding, its not on PrizeRebel end but on the $#*!ty survey partners end. Some of these market researcher cant figure out how to program a survey to save their life. Of these types of surveys, I'd say maybe I'll encounter 1 every 50 surveys.
The support team at PrizeRebel have been quite helpful as well especially in investigating into these researchers. Mark and Dan are polite and very attentive to the issue, just make sure to provide as much info and screenshots as possible to make their investigation quicker.
Overall, PrizeRebel has been a wonderful site to make some fun money, especially during covid when I've used it more to get PayPal redemptions.