One other point, which you may already be aware of, is that the font size on the image next to the phone number, as well as the links for "about", "contact us",

One other point, which you may already be aware of, is that the font size on the image next to the phone number, as well as the links for "about", "contact us", and "legal & privacy" is quite small, and I had trouble reading it. Given your audience is elderly people, it might be good to increase the size of these items -- having to search for a small link to find the phone number mostly negated the effect of seeing a real 888 number for me.