Well I eventually figured out that I had posted summat in the past with a PC version of a webpage and a second version, to be looked at by mobile phone users which is displayed automatically if you are looking on a phone. It took some hours of tearing my hair out as I had forgotten that it could be done but, in the end,
the page is finished, multi version automatically etc. I don't need to put up a second link to a mobile phone version which is how I started this process some hours ago.
Just PHEW