I am having the same issue as the OP. Even using the Munich hotel shown for a variety of dates, I cannot get the 'coins' to appear. I have over 4000 points. When I called Accor, they said everything with my account was fine. Not sure what to do either. Missing out on a possible 80EUR saving on a hotel and my points will expire soon. Doesn't matter which hotel I pick, can never get the 'coins'. Same issue on the app and when using the call center.