Invalid License Contact Vendor (Again)

I looked at a couple of the old posts and it does not look like there was a viable solution for me.

I've reinstalled XP-12 and RealityXP Garmin GTN 650 and I'm getting the Invalid License Contact Vendor that apparently others have seen. I've gone through the original invoice and other notes I have and ultimately the Flight1 site sent me here.

So what is the fix for this Invalid License Contact Vendor error message I'm getting? I've uninstalled and reinstalled the RXP GTN a couple of times with no luck.