Are you logged in? It appears you can go to the privacy settings page and set some (not all) settings without being logged in.

Thanks. I just went and disabled it. I also found that they had “products and services notifications” turned on. I know I attempted to disable all advertising and monitoring stuff shortly after I signed up, but I can’t say for sure whether I had missed this section at that time or if they kindly turned it on for me between then and now.