@Foxeryan33
You could try using the "Contact us" option on this help page to contact 24/7 Nest Aware Premier Care:
https://support.google.com/googlenest/answer/9233159?hl=en
If your doorbell was the only camera, Google Nest might have automatically cancelled your Nest Aware subscription, since it doesn't make sense to pay for a subscription if you don't have any cameras. But you should have gotten a email about the cancellation.
I'm a little confused about what you really have. You refer to 3 hours of lookback, but that's only with the Google Nest Doorbell (Battery), which is only accessible in the Google Home app. But then you refer to 2 homes in the Google Nest app, where you can only see your older cameras and doorbells. By the way, a camera or doorbell can only be in one "home" or "structure", and you need a separate Nest Aware subscription for each "home". Did you by any chance set up a new "home" when you added back your doorbell?
You can check your subscription here, if it's still active, and if you click on it, it tells you the name of the "home" to which it applies: https://support.google.com/googlenest/answer/9233159?hl=en
You can also check the Nest Aware subscription--if any--by selecting Nest Aware under Settings in the Google Home app or the Google Nest app.
