My wife started playing SWC a year or so ago (maybe longer). When signing up she list me as a multi, I also raised a support ticket to get her list as a multi on my account. Despite this both our accounts still advise we're not registered multi's, why is this?
Might be because it is buggy, or the ASims didn't update it. Either way, if she listed you and you sent a support ticket you should be fine - if it has been a year, I doubt there would be issues now.