A. 1. Close the app completely: Double-click the Home button (or swipe up from the bottom of the screen on iPhones without a Home button) to view all open apps. Swipe up on the Amplifon app to close it. Then, reopen the app and try streaming again. 2. Check for updates: Go to the App Store, tap on your profile icon at the top right, and scroll down to see if there are updates available for Amplifon. If there is an update, tap 'Update' to install it. 3. Restart your iPhone: Sometimes, a simple restart can resolve app freezing issues. Press and hold the power button until you see the slider, then slide to power off. Turn it back on after a few seconds.

B. 4. Clear app cache: Go to Settings > General > iPhone Storage, find Amplifon, and tap on it. If there is an option to 'Offload App', do that to clear some cache without losing data. Reinstall the app if necessary.