A. 1. Ensure your iPhone is running the latest version of iOS and that the Rook app is updated to the latest version. This can often resolve compatibility issues that cause freezing. 2. Clear the app cache by going to Settings > General > iPhone Storage, find Rook, and select 'Offload App'. This will clear temporary files that might be causing the app to freeze. 3. Check your internet connection. A weak or unstable connection can cause streaming issues. Try switching between Wi-Fi and cellular data to see if the issue persists. 4. Close other apps running in the background to free up system resources. Double-tap the home button or swipe up from the bottom of the screen to see all open apps, then swipe up on the apps you want to close.