What do I do if an app unexpectedly quits, stops responding, or won't open? Follow the steps outlined in this Apple support article: https://support.apple.com/en-us/HT201398 Related articles Why am I having issues importing files from Dropbox? Can I use an Apple TV to present wirelessly without WiFi? How do I use Universal Control to transfer files from my Mac to the apps? Where should Case Files be stored on the iPad? How do I manage my subscription?