what is wrong in my code?
NsGpuCNMiner.exe -o stratum+tcp://xmr-eu.dwarfpool.com:8005 -u 4GdoN7NCTi8a5gZug7PrwZNKjvHFmKeV11L6pNJPgj5QNEHsN6eeX3DaAQFwZ1ufD4LYCZKArktt113 W7QjWvQ7CWBjZiJTcVxE7DJjTmE -p x
cannot connect I get
Error in server response
: {"id":1,"jsonrpc":"2.0","error":{"code":-1,"message":"invalidaddressusedforlogin"}}
There is nothing wrong with your code, but dwarf does not support those XMR addresses. I sent an email to support and I'm waiting for their answer.
I think Claymore is sorting the stratum username mess out soon in the next update:
Please allow workernames as username, not only wallet addresses
bumping this once more

Ok I will release new version in 2-4 days,
I will update many things.