All campaign progress and saved games are away!

@HourlyAunt89897, @n0r6ert
User profiles with selected options, hotkeys, campaign progress, savegames, etc are saved into folders with numeric names, like “79561218046703349” in “C:\Users{username}\Games\Age of Empires 2 DE” folder. Check what folders of that kind you have in there and what do they contain.

Maybe game got confused and created new profile folder. Older profile folder might still remain (back it up somewhere safe just in case) and you might be able to get game to use it by renaming its name to same as new currently used profile folder (rename new folder to some other temporary id and delete it later if is not needed).