Could it be that they were anon zaps or paid to your profile?
Just because you receive a payment in ZEUS Pay, doesn’t mean it’s necessarily a zap
Discussion
When I receive anon zaps, it shows up as anonymous in Damus. When I receive a profile zap, it shows up as a profile zap in Damus as well. I doubt they were paid to my zeus profile.
Some of them have “onward” written in: that’s from Primal.
I also see 3 from someone I know (since he signs them) but only one appears in Damus. I can dm you more info about this, if needed