I'm told by a friend who deals with modern stuff (I only go to ~2005) that 2016 onwards VAG models are no longer supported by VCDS. Apparently the protocols are all new and different. Might be worth confirming that with Ross-tech before buying something?
Edit - just checked the site and it appears the new Hex-Net does support the new UDS/ODX protocols. I suspect the older Hex-Can doesn't as that's what my friend and I both have.
Not impressed with their new licencing model at all