invalid hasrate is 3.18%  around 1.40 TH/S in DGB sha256 .is it ok or loss for me  i dont know how to reduce it .

also pool stats not show any hash rate from last one hours my s9 shown working on the pool but the pool dos'nt show any hash rate or any mined coin in last hour.it will loss for me admin plz see.i just switch my s9 to another pool if the same problem persist for next hour .