update: for site 3 I turned off redirect, cleared caches, and lowered my 10web compression to standard.
enabled redirect and it now forwards to /amp/ for mobile but now the pulldown menu has gone.
site 2 I swapped to google AMP. It has a few plugin incompatibilities, but they can be suppressed and it shows a mobile homepage with images and using the same theme, even though it is set to use it’s own, though this is not an issue, and I have menu. Although the mobile URL shows no /amp/ URL.
Now they are more or less working, I will see which AMP plugin I prefer.
