OK, all reformatted....
I had not realized that when I pushed the Tropical Theme button, away went the mobile formatting and the sidebar went bananas, so I spent some time this morning a) trying to remember the name of the theme I was using before, and b) how to set it up again. Now it's mostly normal again, though I still have a useless Home button on the side. But you should be able to read on the phone again. (Swirly eyes icon)