GVS (Guangzhou Video-Star) in ETS6?

I'm trying to use ETS6 to configure GVS KNX devices (https://www.gvssmart.com/)

I don't see any of their products in the online catalog. I also can't install any of their .knxprod or .vd4 files, which seem to all be for ETS4.

Has anyone been able to use ETS6 with GVS products?