WotLK Character missing

[denzaa1]

Didnt play in years now i stared and my ch is missing from icecrown, i play on that acc since2016 and my logs on site confirm that
One ch lvl 90 and couple of 50-60 lv all missing

[denzaa1]

that characters was from 2021y

[Mitzen]

No more level 90 characters, as MoP is decommissioned. https://forum.warmane.com/showthread.php?t=479879
Any level 50+ would have their names removed. If they were level <50, they'd be removed if the account isn't premium.
More about that: Inactivity Cleanup and Gold Squish for a healthier economy

If your characters were above level 50, they should still be there if they were on Icecrown/Lordaeron.
If they aren't, make sure you're logging the right account, and have the right realm selected. If the account and the realm are correct, your characters were most likely deleted by another player after cleaning them of any value. Restoration period for a player deleted character is up to 30 days.