Paragon trial reset NTFS in Mac macos high sierra 10.13.3 How To Install Paragon NTFS For macOS Sierra (full version).

Hey folks, I recently gave Paragon NTFS a 10-day trial (MacBook Pro Leopard 10.5.6).
It gave me some interesting controls over my Bootcamp partition, but ultimately I didn't have a good reason to buy it.
The trial period lapsed and I ran the uninstaller.
But now, I get this annoying pop-up on startup that tells me that the trial has expired and that I should follow a link to buy, etc.
It's got a check box to 'never show this again' but the checkbox, while selectable, doesn't produce the desired results.
I'm trying to find that little cuss of a pop-up.
Any ideas where I should look to rip out the guts of this little bugger?
I tried system > Library > Application Support and user > Library > Application Support but neither turned up the culprit.
Also doesn't appear in 'Login Items'.
Suggestions?

Ni 6211. The USB‑6211 features a lightweight mechanical enclosure and is bus powered for easy portability. The included NI‑DAQmx driver and configuration utility simplify configuration and measurements.