See this discussion.
Cannot comment on your other issues like instability and crashes as I do not experience them with my rockit. I also have no Wireless reliability issues at all with my setup but other users have mentioned issues. There is a post with a proposed fix for ppl with wifi 6/7 adapters: EinstarRockit wifi connection issue - the solution on my PC
There is tech support via that forum and also the possibility to get support via email: einstar_support@shining3d.com
I’m not affiliated with Shining3D in any way, just another community member.