The only thing I had to do was add the full URL to the field Server URL under Settings/Server
Can’t speak for your versions of the client but I’m running 2.0.29 server and 2.0.28 client and just tested it on both my Win 8 and 10 machines as well on my win 2012 R2 servers where I have the client installed and it worked as expected.
No linux, sorry 
