I know that I can get multiple redemption codes from Apple Business Manager, let users download custom apps using redemption codes, and there are region restrictions. Does the user have to enroll own devices in MDM to download custom apps with redemption code? Because users are not necessarily full-time employees of the company, they may also be short-term partners who use their own devices.

Since a few days my Apple Business Manager Enterprise App in Azure was quarantined. I had no configuration changes, it just suddenly stopped. I have two groups which contain the users I want to sync. It seems it cannot use groups at all anymore. If I assign users directly it will work. But that's very inconvenient for us. Was there any change lately to explain why this does not work anymore? Group User