will not be seen by Staff as it has been marked Completed, which means closed and archived and no longer monitored by Staff
Not the way to get rights on a wiki; you don't come in at the (after the) last moment of the process and say "hey, me too!". Since the adoption was approved, you'll need to contact the new Admin to discuss promotions
BTW, these are the sort of things prospective admins should understand. G'luck in the future!