Looks like there are a couple of issues with v1.11.1; like the one I posted, yours and here:
Payout history in web dashboard wrong in months with surge payment
So, for now, Iām relying more on @BrightSilence 's earnings.py 
Looks like there are a couple of issues with v1.11.1; like the one I posted, yours and here:
Payout history in web dashboard wrong in months with surge payment
So, for now, Iām relying more on @BrightSilence 's earnings.py