Mark, your paid membership ran from 30-08-2011 to 30-08-2012 and I have 2 notification emails from Paypal, one from the 30/08/12 and one from 02/09/12 indicating your subscription payment for Full Membership Subscription has failed, this will be something to do with your paypal account, perhaps no balance in your paypal account or the card linked to the account has expired. Take a look at the details in your paypal account and let me know via PM.
Steve