Log in to your account by visiting https://millenniumhealthstore.com/ and clicking the icon in the top right. Or click the following link: https://millenniumhealthstore.com/tools/recurring/get-subscription-access
In the Payment Information tab, you'll find the current method of payment along with the current billing address. However, this is not the same as the shipping address. Edit the address in this section if something has changed for the card holder's place of residence or the email address on file.