Pure Go app Spotify service not working with partners login on familly account

[jimbob812]

Hi,hopeing someone can help.

I have just setup a Pure Highway 600 bluetooth and dab unit in my partners car.  Its comes with the ability to link to you spotify account through the andriod Pure Go app.

Now login into Spotify on her phone with my login details (main account on family subscription) the units is working fine and streaming spotify content however using her login details (listed under my my account) you get a message in the Pure Go app stating account is free/not premium.and the unit does not stream spotify content.

Please could someone help, thanks