Gimmick tactics to make a revenue

McDonald's has this game on its app in which you get certain achievements and get holiday vouchers, movie tickets etc. But it all seems as a gimmick. We use our data to play the game, which in probability, mcdonalds gets a revenue from it. But when you win certain things, like I have won holiday vouchers, movie tickets, etc, they do not give you the award. With one holiday voucher, they was suppose to email me the details. I did not receive the email. I called the call Centre and the lady "escalated" it to the I. T people who was then suppose to resolve it. To date I have not received a call back nor have I received my voucher. Another time I unlocked a holiday voucher, I go to redeem it.. I click redeem and activate, from which you are then given 5 minutes. It then takes you to another internet page, but this page does not load and your 5 minutes is ticking away. I had also unlocked a movie ticket voucher and experienced the samething. It seems as if the game is a gimmick to make money and mislead consumers because we don't get what we achieved. This is a disgrace from such a big company.