We move into a new home

We moved into a new home and it has the Rachio 3 Smart installed and I downloaded the Ap and tried to log in and get everything setup. but the old owners of the house already had it registered under them.
I would like to keep all of the config in the unit so I don’t have to redo everything but I would like to login using the AP.

Can you anyone help me?
Thank you

I had the same issue. I did a factory reset on the controller and it worked for me.

If you got an error message that the controller is already in use (and you want to preserve the configuration), ask the old owner to transfer ownership to you; see

If he won’t cooperate (and won’t give you his login and password so you can do it yourself), the above link will also tell you how to request Rachio to release the device to you.