- What is the version and build numbers of your MobiControl  Server? 

- What is the version and build numbers of MS Windows 10 on your device?

- Do you want to lock down your device to run only one app or multiple apps? 

- Did you set Kiosk mode or  Assigned-Access in the profile tab of your web-console?   Did you set the Package Family Name and App-ID to be Microsoft.dynamics365foroperations-warehousing_8wekyb3d8bbwe and app respectively in the profile?

- Could you show device screenshot(s) or give more details of your problem?