I don't understand the pp. Under recent played is listed that the last songs gave me 7 and the other 15 and so on. But my pp score didn't change since 1 day
Can someone explain this to me pls?
The value you are looking at is unweighted. Instead of looking under Recent, scroll up a bit to the Best Performances section of your profile. There you can find both the weighted and unweighted values for your scores. The weighted value is what you want to pay attention to as that is what is used when calculating your total pp (as explained on that wiki page in more detail).