You can attempt the following troubleshooting methods to fix Google One not Working properly for you:

Verify your internet connection. Make sure your internet connection is strong and reliable. For Google One to function correctly, there must be an active internet connection.

Check to see if there are any updates for the Google One app in your app store if you're using it on a mobile device. The most recent update to the app can frequently address bugs and enhance performance.

On Android smartphones, navigate to Settings > Apps > Google One > Storage and select "Clear cache" and "Clear data." To erase the cache and data from the Google One app on iOS devices, uninstall it and then reinstall it.

Restart your device: In some cases, a quick restart might fix minor bugs or conflicts. Check if Google One begins to function properly after restarting your smartphone.

Take a look at your Google account: Make sure your Google account is operational and active. To re-establish the account connection, you can try logging out of your Google account on the Google One app and then logging back in.

Verify storage capacity: If you're having problems with backups or storage, check to see if you have enough space on your Google account. By going to the Google One website, you can manage your storage preferences.

Talk to Google Support by: Contact Google Support for more help if the aforementioned measures don't cure the problem. They can offer detailed troubleshooting instructions or look into any known problems with the Google One service.

Keep in mind that depending on the device and operating system you're using, these instructions may vary significantly.