Hello,
We had the same issue. After running the onboarding script, we also had to ensure that KB5005292 was installed on our servers, the EDR security recommendation then updated correctly.
https://support.microsoft.com/en-gb/topic/microsoft-defender-for-endpoint-update-for-edr-sensor-f8f69773-f17f-420f-91f4-a8e5167284ac