Can’t use Dolby Atmos on HomePod if you don’t have the phone you set it up with?

I wanted to try Dolby Atmos on my HomePod mini, but as you can see from the instructions in the photo, you can only change this setting from the phone you set up the HomePod with. In my case, I traded that phone in a month ago. Is there a way to change the setting on my new phone? Seems absurd but I don’t think there is.