You might see a message saying there was a problem downloading when you first try to download the app. This happens when there is a poor or inconsistent connection to the internet; the game has a lot of content to download and needs a consistent connection throughout. Here are some suggestions you can try to fix the problem:
- Turn off your cellular connection, and try downloading again using a strong wi-fi network - this has solved all of the cases we know about
- Check that your device has the correct date and time. If it does not, please correct it and try the download again
You don't need to be connected to the internet to play the game, but you do for the very first download.