When Polycade AGS is in "commercial mode" it doesn't give you access to the store or settings unless you're logged in. You can reset AGS to choose a commercial mode by finding the settings option "Reset Provisioning Data" and toggling it on. Then restart your system. When AGS comes up again, it will ask you if you intend to use this in a home or other - choose "other" and then select "apartment building".
When in this mode, you can still access settings by pressing ESC on your keyboard.