User blog comment:Merrystar/Adopting a wikia/@comment-26037236-20150618082106/@comment--20150618100250

It says very clearly on the Adoption page that admins are removed if they have been inactive for a year or more so that's quite weird. "'' Existing admins will be removed only if they have been inactive for more than one year." ''

You can trying sending in a request Special:Contact asking why your admins weren't removed.