Current Hashrate: 0

Hi, i dont know what i'm doing wrong. I try to mine on ethermine.org pool and my current Hashrate is always 0. 0 active worker.
And i mine something. my 2 video card 390x are at 100% and fan 100%.

I'm using qtminer. So this is command line:

qtminer.exe -s us1.ethermine.org:4444 -u 0xmyaddress.rig1 -G

after, if i put my address in the check status box.

thanks