All the butt ones at the top, for readers, author tools, my username and settings, don't work!

Hmm, that does sound like a problem.

What device are you using, please?

Same for me on an iPad

Hmm. That's frustrating. I'll try and dig out an iPad so that I can test. It's fine on my Android.

In the meantime, is there a particular page you'd like to access? I'll post a direct link.

Same issue on iPhone.