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Check licensing status
Run the following cmdlets
(Get-MsolUser -UserPrincipalName firstname.lastname@example.org).Licenses.ServiceStatus
4. You will be asked to diagnose throttling settings for your tenant. Click Run Tests to do so.
5. Regardless of the the result you will have to ease the throttling policy settings for 30, 60 or 90 days. Select the value that meets your needs from the Duration (Days) drop-down menu and click Update Settings.
This will allow automated process to re-trigger provisioning of the tenant services.
Next is to toggle on and off apps from the user license settings from the admin center. Toggle off for 5 minutes then turn it back on afterwards
After performing above and waiting for a total of 48 hours, you will need to contact Microsoft 365 support to get it escalated to their back end team.
Should you have one, click here