Does Charge On Solar support the Powerwall being in a different Tesla account from the Tesla Model S?

We have two Tesla Model S cars, each in separate Tesla user accounts (his and hers), a Powerwall3 w/solar and a Tesla Wall Connector. The Powerwall3 is owned by His account and Charge On Solar works great to His Model S via the Wall Connector.

Can the same Powerwall do Charge On Solar to HER Model S (not simultaneously with HIS) even though it’s in a separate Tesla User Account? Or do the Powerwall and the car need to be in the same Tesla account?