Thanks for help , I tried everything and finally I managed to login after did not enter any password ....Strange site is pool.gridcoin , no password reset , no e-mail , no support, nothing.
nope , this will only make people to replace with AMD video cards and use free OpenCL software. 4 years ago when BTC cost $1 had one paid CUDA miner , against him there were 4 free OpenCL miner with much much high speed.This not working.