A. 1. Ensure you have a stable internet connection; try resetting your router or switching to a different network. 2. Close any background apps that may be using bandwidth by double-tapping the home button and swiping up on those apps. 3. Clear the app's cache by offloading the app as mentioned above.

B. 1. Restart your iPhone to refresh the system. 2. Check for any available updates for the app in the App Store and install them.