To identify what email account your hub is associated with locally, please connect to the hub and select Settings on the left menu. Then click on Hub Details and scroll down.
The missing hub/registration on my.hubitat.com is indicative of a hub that has not been able to connect to the cloud for an extended period of time. In fact, I checked your hub based on the email provided (by the way, you should remove the above picture revealing your email address) and it appears that it has not been connected to the cloud since 11/25/22. Please check below thread for a similar incident that occurred yesterday:
