Thanks for that info, James. My problem is there is no option for customising the theme in the https://www.aycyas.com/andyoucallyourselfascientist/ blog: no option for CSS, for example – whereas I do have those options for https://andyoucallyourselfascientist.com/ but do not have the capacity to create child themes etc. as instructed. Can you advise how to proceed?
I have to say, I find the .com vs .org business very confusing—rather, it’s the kind of thing you don’t know you need to understand until it’s already too late. I imagine that a lot of people, like me, start out on a free blog, upgrade to Premium .com and THEN discover the .org situation.