On your iPhone, the AppStore indicates that you have updates waiting. You choose to “Update All” (or choose a specific App and “Update”). You get the response “Cannot connect to iTunes Store”. You notice that other updates can be installed; only a specific update failed.
You are not going to be able to update the app. Uninstall and reinstall the app to get the update. Deleting the app will also delete all of its data.
If this fails:
- Hard reset
- (Settings, General, Reset) “Reset All Settings”