I just renewed online, but that took a great deal of searching.  I first tried "join," as there was nothing about renewal on the home page.  The join page told me I was already a member and had to use the renewal function, but with no indication of how to do that. Eventually after resetting my login password (which I believe I never had in the first place) I found a renewal option on the profile page.    It only took a few minutes to blunder my way through to the renewal function, but maybe there's a better way?  Not complaining; just hoping to be helpful.  As the old song goes, "Thanks for the memories."