Troubleshooting Cloud Policy Service (CPS) - part 1

So what's the correct way to force a device to recheck in? I have 45 devices still sitting at the Feb update.

When I go to any of these devices and look at the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\cloud\office\16.0\Common\officeupdate

I tried deleting the following on a single device.

1. Delete the HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\CloudPolicy registry key

2. Start an Office app

3. Exit the Office app

4. Start an Office app - the policy is now active and gets applied

But the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\cloud\office\16.0\Common\officeupdate is not showing the latest targetversion

I also just noticed that all these devices say

Onboarding To Monthly Enterprise Channel under the cloud update status out in https://config.office.com/officeSettings/inventory/devices

I see this in regards to my last statement

https://learn.microsoft.com/en-us/deployoffice/admincenter/cloud-update#devices-are-updating-outside-of-their-assigned-wave

But I am still wondering why devices skipped last months updates....