Em_st_artifacts flutter 1.0.3 is buggy, same with pyem_st_artifacts 1.0.7. Or is it the other way?

I am using em_st_artifacts on flutter for brainwave analysis. I have recorded data and tried to recreate brainwave values from the recorded data, both the above mentioned versions give me wrong values, when I switch to 1.0.1 in flutter (and 1.0.5 in python, compared to the latest 1.0.7) I get the same values. So is the 1.0.1 version buggy or 1.0.3? please can you clarify this issue? With spect_art_by_totalp set to False the calbration wont even complete with version 1.0.3. The main problem I have is that all the calibration data I have collected are with 1.0.1. Can you help me understand what the right course of action here is.