A. 1. Clear the app's cache by going to Settings > General > iPhone Storage > FitCloudPro and selecting 'Offload App'. This will free up space without deleting your data. 2. Restart your iPhone to refresh the system and improve performance. 3. Ensure that your iPhone has enough storage space available, as low storage can slow down app performance. Go to Settings > General > iPhone Storage to check available space.
B. 1. Check for updates for both the app and your iPhone's operating system. Go to the App Store for app updates and Settings > General > Software Update for iOS updates. 2. If the app is still slow, try using it during off-peak hours when server load may be lower.