A. First, try closing the app completely and reopening it. On an iPhone, you can do this by swiping up from the bottom of the screen and swiping the app off the screen. If the problem persists, check for any available updates for the app in the App Store and install them, as updates often fix bugs and glitches.

B. If the app continues to glitch, consider uninstalling and reinstalling the app. To do this, press and hold the app icon until it jiggles, tap the 'X' to delete it, then go to the App Store to download and install it again.