You sure you were not on a limited time trial and that it didn't expire? If you have full version rights and your subscription isn't expired, as AIS is only available in 1,2 and 3 year paid subscriptions, I'd uninstall and reinstall it if you have a record of your purchase information or have the license key saved. You might be expired and if so, I'd recommend uninstalling it and installing this instead.
You sure you were not on a limited time trial and that it didn't expire? If you have full version rights and your subscription isn't expired, as AIS is only available in 1,2 and 3 year paid subscriptions, I'd uninstall and reinstall it if you have a record of your purchase information or have the license key saved. You might be expired and if so, I'd recommend uninstalling it and installing this instead.