How to reset Flight Record on DJI Go App?

[Jhun80]

I had Spark, then sold and bought a new MA months ago, and recently I bought a used MPP. On the DJI Go 4 app, I was still on Level 1 and then I accidentally sync the MPP(i dont know how to reset the drone unit itself) and the previous user is Level 10. How do I reset it back? I tried clearing the cache record and all of my flight lists are gone. I just wanna go back to my original Level 1 and I want to see my old list [emoji20] .

Thanks