To address the issue of not being able to add people on the Hoop app, you can follow these step-by-step solutions:

1. Check Internet Connection: Ensure that your device is connected to a stable internet connection, as a weak or unstable connection can prevent the app from functioning properly.

2. Update the App: Make sure you are using the latest version of the Hoop app. Go to the Google Play Store, search for Hoop, and see if an update is available. Update the app if necessary.

3. Restart the App: Close the Hoop app completely and restart it. Sometimes, a simple restart can solve minor glitches.

4. Clear App Cache:
- Go to Settings on your Android device.
- Tap on Apps or Application Manager.
- Find and select Hoop.
- Tap on Storage and then click on Clear Cache.

5. Check App Permissions: Ensure that the Hoop app has the necessary permissions to access your contacts and other features:
- Go to Settings > Apps > Hoop > Permissions.
- Enable permissions if they are turned off.

6. Reinstall the App: If the issue persists, consider uninstalling the Hoop app and then reinstalling it. This can resolve any corrupted files that may be affecting the app's functionality.
- Press and hold the Hoop app icon until an option to remove appears, and select uninstall.
- Reinstall from the Google Play Store.

7. Contact Support: If none of these solutions work, reach out to Hoop's support team via their support section in the app or on their website. Providing them with details about your issue can help them assist you better - learn more - learn more.

8. Look for Help Videos: There are helpful videos on platforms like YouTube that might guide you through troubleshooting steps visually. For instance, you can watch "How to Fix Hoop app not Working Problem" for additional tips - learn more - learn more.

By following these steps, you should be able to resolve the issue of not being able to add people on the Hoop app. If the problem continues, staying in contact with their support team might yield further solutions.