Can someone please help me understand why I receive "invalid username" error below. I am using miningpoolhub.com. My worker is named properly.

Error in server response
: {"id":1,"jsonrpc":"2.0","error":{"code":-1,"message":"invalidusernameusedforlogin"}}

Here is my config file:

-xpool ssl://us-east.cryptonight-hub.miningpoolhub.com:20580
-xwal WALLETADDRESS.jarheadius.1
-xpsw x
#-allpools 1
#-tt 75