Updating your IOS or Android device will help you to get out of a problem situation with your app. It’s like emptying your cache/cookies: very important. With an Apple device (iPhone, iPad ou iPod), go to Settings, then General. You will find the “Software Update” tab: a number will indicate if an update is available. If this is the case, install it. Your device will restart on its own once the update is installed. /!\ You must be connected to the internet to be able to update your application /!\ If you are using an Android device, go to Settings, then About (tablet), then click “System Update”. The device will search for an update and will ask you do update if one is available.