Board Game Arena

I ask it because if we go into Puporn's profile, then we click on "39k XP"
https://boardgamearena.com/player?id=84 ... n=prestige
we see that he has 563 ELO in Machiavelli.

Then if we go into Machiavelli normal ranking
https://boardgamearena.com/gamepanel?game=machiavelli
and we go into "ever" Placement page
we can see that in the first position we have Yeyo with 470 ELO.

Can anyone tell me what has happened?

He hasn't played in the last 2 months.

If you haven't played, then you drop off the leader-boards.

(maybe 6 weeks not 2 months)

and if Puporn starts playing again, is he back in the first position?

Yes