On iOS on an iPad Air, it is never possible to start the app when it’s been left open but unused for some time. It fails in a number of ways:

• loops Reconnecting, you press the button, it spins, asks you again
• app starts but is not logged in, shows War in Momir or something, has none of my decks or profile
• says can’t log in, this happens when an update to the app is required. Starting the app from scratch will tell me an update is required, but loading from sleep never will until I close the app and reopen

When the app is open but the iPad is not being used or is being used for other things, iOS will sleep the app. This bug report is to report that the app is not capable of waking from sleep. It’s also not capable of telling the user to close and reopen it (although this should never be required by any iOS app).

I would expect anyone who plays regularly on iPad to encounter this issue every time they sit down to play.