Could you share a screen shot of the section of your ePO console which indicates that the endpoint is non-compliant. We can then try to identify which element is causing the evaluation.
Volunteer Moderator - Business Products
The screenshot is showing that VSEL is not detected as installed. You should have two items under Product Column VSEL & Agent
Nearly sure agent should not record dat version as agent does not directly use them.
The installed Scanning product - VSEL - uses the Dats.
There is a known issue in VSEL 1.9.1 whereby it can loose contact with Agent and appear not to be installed.
This is fixed in VSEL 1.9.2
Would recommend you use at least SP3 version of McAfee Agent (version will be something like 18.104.22.168xx)
Then deploy VSEL 1.9.2.