Thank you to all of you who checked through and found the problem with the ‘about’ section on my intro page. It took me some time but I finally figured it out (I think!). Apparently the earlier changes had been applied only to my gravatar for some reason. It took a little tinkering to get it on to WordPress as well.
I hope it’s all fixed and you can read it now. If I end up wasting your time again, I solemnly swear to delete that “about” section and never look at it again, so long as I shall live.