Thanks sebi. The problem appears to be with a menu linking to anchors on the home page. Currently I’ve removed all the anchors and their respective menu items so the site will at least function somewhat.
When linking to anchors in the mobile hamburger menu the menu opens but freezes, the links don’t work and the page becomes unresponsive.
Meanwhile on lap/desktop the page doesn’t freeze but the linked menu items don’t work.
It seemed at one point that where I had a mixture of menu items that went to site pages and some that were assigned to anchors on the home page the page linked items worked but the anchors didn’t.
If I use just anchors it doesn’t work. If I use just page links it does work, if I used a mixture then just the page links worked.
The strange thing is, that a couple of days ago it all worked fine. When I restored an earlier version of the site from a time I knew it worked ok, the problem persisted with that version too.
the other thing about anchors was the page scrolled to a point significantly below where it should. It appeared to be out by 100 pixels or so, which is the depth of the master header…
Also, When viewing in preview mode everything works fine (apart from the 100px mismatch) but when published the links don’t work…