A. To address glitchy performance, start by clearing the app's cache. Go to your device's 'Settings', then 'Apps', find FluentU, and select 'Storage'. Tap on 'Clear Cache'. This can help improve the app's performance by removing temporary files that may be causing issues.

B. If clearing the cache does not resolve the glitches, try uninstalling and reinstalling the app. This can help reset any corrupted files and ensure you have the latest version of the app.