Are you sure that none of the numbers is a typo? Going from 185 to 2200+ "in a very short time" is probably impossible.
If it's a new account the rating can fluctuate pretty wildly.
As I said, the player won and lost games to players with a very low rating. And his account was not new at that point.
What account did you look as I did not give you one? The player is not same as the one who's blocking me now. He was an old opponent that I played in 2022 and got the rating up much quicker than in three years. Biggest jump was between two weeks.