Hello John.
The mag code associated with your MEW subs number ends in '1' which means that you should be getting digital archive access which will run 30 days past the end of subscription date.
The main cause of this problem is, as Jason says, a mismatch between your subscription details and those in your profile (email, address, name) which are used to make sure someone isn't pirating your subscriber number.
Neil
Edited By Neil Wyatt on 14/07/2016 12:52:19