After entering my order number and password then clicking on "Manage Order" I am asked to enter my email address and account password. This gets rejected with "Invalid email address", even though I can successfully log in to my account elsewhere and see that my email address has been validated. Sales pathway is Digital River.
I note that similar complaints have appeared on the forum since early 2015 and it appears nothing has been done to rectify the problem. I suspect that this is because automatic renewal is to the financial advantage of the vendor. But, dear vendor, your customers don't like automatic renewal of annual subscriptions. And if not satisfied, those customers may well permanently cancel their subscriptions and go elsewhere.