The authkey alone isn't enough. You also need to specify the map collection to use and also a startup map. The commandline parameters for that would be like this:
+host_workshop_collection 2174336297 +workshop_start_map 1984637676
I just picked the id for the fist map in your collection (Jingshen).

Be aware that when your start your server for the first time with workshop maps it'll take some minutes for the server to download all of the maps. You can see the progress in console. During that time the server is showing up running Dust2 as a map. Nothing to worry about. Just wait till the downloads are finished and it should change to the startup map you've specified.

Thank you
Did u know why the mapvote is not working? End of the round if ppl vote it loads not the winning map

Must be something messed up in your settings I assume. I haven't configured anything special regarding map votes on my server and it just works as it should. The only 2 settings I've changed are:
sv_vote_issue_restart_game_allowed "1"
sv_vote_allow_in_warmup "1"

Are you running any plugins that might cause the issue?

W here did u change that i will test
Server.cfg?
I had source mods installed. I uninstalled now

Yep...server.cfg
The only other setting I think that might cause problems with the map vote is:
mp_match_end_restart
Make sure it's set to 0.

did you solve your problem? if yes how?