10:28:48:978   2e80   Stratum - Connected (unsecure)
10:28:48:978   2e80   New connection: reset total hashes counters
10:28:49:062   2e80   got 100 bytes
10:28:49:062   2e80   buf: {"id":1,"jsonrpc":"2.0","error":{"code":-1,"message":"invalid address or username used for login"}}

10:28:49:062   2e80   parse packet: 94
10:28:49:062   2e80   Error in server response
: {"id":1,"jsonrpc":"2.0","error":{"code":-1,"message":"invalidaddressorusernameusedforlogin"}}
10:28:49:077   2e80   buf was cleared
10:28:49:077   2e80   Stratum - reading socket failed 10038, disconnect
10:28:49:077   2e80    Job timeout, disconnect, retry in 20 sec...


As username I use xmr address generated in Kraken but why the miner doesn't accept it??