We’re seeing a lot of “Unauthorized worker” responses coming back from suprnova. If you are trying to use suprnova as your pool, you need to include your account, your worker name, and your password. Like this:
Username:
myuseraccount.myworkername
Password:
thisismypassword
See Toomim Bros pool and wallet setup guide for cloud mining - #4 by jtoomim for a more in-depth guide.