Administrator of my Late Brother's Estate

I’m the administrator of my late brother’s estate. I don’t have passwords or access to the network on which the rachio 2 is installed.

Can I connect the Rachio 2 to a new network and get it to resume it’s schedule, or would I need to install it from scratch?

Also, the power had been off for about a week. Did that erase the program, or is it stored in non-volital memory?

Thanks!!