There could be several reasons why your וואצאפ backup is not working. Here are some possible causes and solutions:
1. **Insufficient Storage Space:** Ensure that there is enough space in your device or Google Drive (for Android) or iCloud (for iPhone) for the backup. Clear some space if necessary.
2. **Poor or No Internet Connection:** וואצאפ backup requires a stable internet connection. Check your WiFi or mobile data connection.
3. **Incorrect Account:** Ensure that you're using the correct Google or Apple ID account that you've used to backup your וואצאפ data.
4. **Google Drive or iCloud Settings:** Check your Google Drive or iCloud settings to ensure וואצאפ has the necessary permissions to back up to the cloud.
5. **Update וואצאפ:** Make sure you have the latest version of וואצאפ. Go to the Google Play Store or Apple App Store and update if an update is available.
6. **Reinstall וואצאפ:** If all else fails, uninstall and reinstall וואצאפ. Remember to backup your data before uninstalling to prevent data loss.