Is it just me or ?
When i set coincalc. as primary stats provider , i'm getting price of ETH of 390$, and ofc, wrong summary for day/month
When i set WTM as primary, eth is OK, but then GRIN31 ( which i mine also with NV ) , im getting competely wrong numbers ( but then ETH is ok...)
Can You check this or am i wrong somewhere

Thanks
Please go to the Options dialog, Statistics Provider section, and define a Minimum Exchange Volume of for example 0.01 BTC. This will remove exchanges with low volume that typically gives unrealistic values.
There can of course be cases where some coin provider is reporting incorrect values for a specific coin even with this configuration made.