The number of characters yu have created on this realm

I only have created one character in icecrown, why do I get that I have in the others as well? I have erased all the characters from the other realms.
How do I reset it?

https://i.ibb.co/sWj1tbT/Screenshot-1.png

TY. ;)

It may update after 30 days once the name is freed.
That number was never correct for me so I've learned to ignore it years ago, just remember it lol

You go inside "WTF" folder, dig in, inside folder with your account name there will be folder with realm names. Inside those will be folders with character names, realm selection shows how many folders(characters) you have there, regardless how many characters you actually have. Those folders contain things, macros, keybinds and such sort of configs for that character. Delete those folders and it will show no characters in realm selection, that's how it works iirc