I changed to RU-Server: eth-ru2.dwarfpool.com and now is working fine !
Thank you for this bro.Problem solved.
BTW i am mining ETH+DECRED and i see in my decred mining that i have about 30% rejected packages.Is this normal ?

And finally did someone get to the point for decred vs siacoin mining profitability ?

Which one is best ?
Thank you !

read the other pages...
or look at whattomine.com directly look for the two calculators.
AND YES; EU DWARFPOOL SEEMS UNREACHABLE ATM. NOT A MINER PROBLEM.