Moin! I had the same problem as everyone else the game lies not install, the want verifiable go natural on the ground and have found that the app always wanted to install too soon. Does that mean there were just loaded from the over 500mb 110mb times and wanted to start the installation. The moment I then cancel wait pressed after prolonged the download was then continued. I stayed during the installation and always looked in MB were loaded 3 or 4 times trying the app again too early to install - pressed> Every cancel. At the end of the full 500mb were loaded and I clicked on install. Behold! It worked!
Cumbersome because you have to stay there the whole time but it works! And it's worth it!