A. 1. Restart your device: Sometimes, a simple restart can resolve freezing issues. Hold down the power button and select 'Restart'. 2. Clear app data: Go to Settings > Apps > LEGO > Storage > Clear Data. This will reset the app and may resolve startup issues, but you will lose any saved data within the app. 3. Check for storage space: Ensure your device has enough storage space. Go to Settings > Storage and free up space if necessary.

B. 4. Disable battery optimization: Go to Settings > Battery > Battery Optimization, find the LEGO app, and select 'Don't optimize'. This can help the app run more smoothly.