Just realised the site has been broken for a while, last time I updated the back-end I tinkered with the PHP version and must have been seeing a cached page when I tested it.
All sorted now after fiddling with some extension settings.
It's been very busy the last few months getting settled into the new job, but I'm over the hump now and am making time to do some personal work again, just updated some plugins to support Unreal 5.2.
