A. 1. Close the app completely by double-tapping the home button (or swiping up from the bottom on newer iPhones) and swiping the app off the screen. 2. Restart your iPhone by holding down the power button and sliding to power off. 3. Once the phone is back on, reopen the app and try streaming again. If the issue persists, check for app updates in the App Store and install any available updates.

B. 1. Ensure you have a stable internet connection. Switch between Wi-Fi and cellular data to see if the issue is related to connectivity. 2. Clear the app's cache by going to Settings > General > iPhone Storage, selecting the app, and choosing 'Offload App'. This will remove the app but keep its data. Reinstall the app from the App Store.