No, I don't think we can renew APs thru MS- that must be done either online at the member's site, thru the AP site or onsite at WDW at any of the Guest Services offices. they usually allow a 30 day grace period for renewing at the reduced rate- if it's later than that, it may actually be a better deal to just purchase a new AP and get the full year of use instead of the renewal losing days.