I have the same issue. How is it possible, that now on the first week of Nightwave, I have completed the exact same tasks as my friends, but they are one a higher level? The math does not add up at all: In the Nightwave screen one can easily count I have done 38500 points worth of chores, but the meter only shows 35500. Furthermore, my squadmate has somehow gotten to level 4, even while we both have been completing the exact same tasks! This does not feel fair at all.
I think mine probably got messed up, when there was a host migration on an PoE bounty. Something like it got marked complete