Every school does it differently, some won't update it at all after showing complete or received. Don't judge where you stand based on AADSAS status, it's more or less irrelevant after it's changed to complete or received. I remember most schools didn't update it even after extending interview invites last cycle, I had application complete from September to March last year for half of my schools. Schools that make you an offer after Dec. 1st I think are obligated to put "Offer Made" and then if you place a deposit, it will switch to "Offer Accepted". My advice: check AADSAS a few times a week and don't place much weight on the statuses. I made the mistake of checking it multiple times a day; that only increased my anxiety. The vast majority of schools will update applicants on status via email rather AADSAS.