Which pool? Is it really x13 algo?
I was testing it on nicehash stratum+tcp://stratum.nicehash.com:3337
Did you try a specified Nicehash miner:
https://nicehash.com/software/?
Note: darkcoin and darkcoin-mod represents x11 and x11mod (optimized), respectively; marucoin and marucoin-mod represents x13 and x13mod (optimized), respectively.
now moved to random x13 stratum pool
https://maru.suprnova.ccstill same problem, errors:
Invalid nonce count - HW Error
Rejected - Share is above target
skipping configuration option "kernel", invalid parameter set_kernel
