Unfortunately, I cannot answer whether the app works with Android 7.0 or not. But I have another "problem" with this chance to win. Do I understand correctly that if I enter the receipt in the app or online and then actually win, I would still have to go to a store to scan the receipt again in order to receive confirmation/the prize? This wouldn't be such a big problem for me, as according to the Internet, there should be such a machine in this Migros branch in the neighboring town. But what if you had to travel a long way first (by car or train) just to collect the prize? With a larger amount it would be worthwhile, but up to about 20.00/30.00 francs then rather not. (Gasoline/train subscription). If that's the case, I don't think it's such a good solution. Also for older people who don't have an app/internet, they wouldn't be able to take part in the competition. The competition itself would be a good idea, shopping and with a bit of luck winning back the purchase price. But if it is so "complicated, or associated with a not so well solved "effort", I find it not so ideal.
Well, there should actually be a machine in the (larger?) branches where you can see your winnings immediately. But the machine didn't work for us yesterday either. Unfortunately, I don't know the procedure for small branches.
I saw today (07.08.2017) that there is now one of these machines in my town/branch! Apparently they are "stocking up" with these machines so that you don't have to travel halfway around the world to get to the prize redemption point if you win. That would be a good solution and it would be fun to take part!
As you have already found out, not all the prize draw machines have been distributed yet. A few more should be added over the next few days. Ultimately, there will be 738 promo screens throughout Switzerland. To check which stores in your area already have a screen, you can use our store finder at the following link: