I agree with you changing the locks on the house. May I suggest you simply replace the doorbell as well. You cannot remove the owner of the device. Even if sold, the previous owner must delete the device from their account before it can be setup as your own. You can request from the company, removal of the device from the previous owner’s account in times of death and such, which requires paperwork, legal proof, etc. Seems like a lot of effort in this case. For the price of the around hundred bucks, if H won’t give you ownership, remove the doorbell and install a new one.
D
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.