Hi,
I did, this was regarding 737 (other was for 777).
Anyhow, I think it is a fully valid question since they Explicit State "This is compatible only with Lockheed Martin's Prepar3D. (v2.2.x - v2.5.x)"
on their website.
If they already have made an installer ready for P3Dv3 for existing customers (owns the x7x for P3Dv2.5x) they should/could
spend some minutes to update their website. So this was know for new customer as well.
Brgds
Søren