Hi, maybe I can help you with this probem.
I search on my site for this apps application user model ID.
I saw your ID of the Microsoft company portal is different than mine:
Microsoft.CompanyPortal_8wekyb3d8bbwe!App
I would try to change the ID in the next step.
You will get all your app user model ids with this command:
Get-StartApps | Where-Object -Property AppID -like '*CompanyPortal*'
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