Many thanks to all of you who have contacted me to say that they either can or cannot see the sales site.
The main problem is that the web host has blocked IP numbers because of hacking. He is working to ease that, though it seems unlikely that it will ever go away. This is a problem that affects all web hosts because of the actions of *!/*”!*s.
A second problem has appeared. Nobody was able to contact using the link I included in my last post! It was accurate but did not work. That’s a bit headscrambling. Continue to use whatever means has got you to the sales site successfully before, or type the web address into your browser address bar.
Sorry about all the hassle and thanks for bearing with me.