Apple App deployment

Hi, i have Apple business manager synced with Intune for both Devices and Apps and that part is working fine.  However two things

1. We are using managed apple ids, and everytime a user logs into their phone it reminds them that their managed apple ID cannot be used to purchase apps, is there a way to supress this message?

2. I am a little stuck on deploying the Company portal Intune app to these devices. It appears its as simple as assigning the Company portal Intune VPP App to a device group as required intune. problem is we have a tenant owned by our parent company that is shared by multiple child companies like ours, so i need to ensure i only assign to our iphones, do you think it's possible to use profile name i have assigned to create the dynamic device group based on say device.enrollmentProfileName -eq "mycompany iOS/iPadOS Profile" ? i have to wait for my parent comany admins to create the group and they can take a while to respond so just making sure this will work?

Thanks for any assistance.