Sussed it - sort off.
When using my ipod it defaults to the mobile version which just doesn't work for me. If I switch to the full version I can read posts and new content as usual. If anyone finds a fix for this, please let me know.
The chrome browser on my android tablet has an option to "use desktop version" of a web page.
Firefox has an add-on called (I think) "Phony" that will let you choose whether a website recognises your browser as a mobile or desktop.