I am posting this here, because I am not sure where else it would go…
Yesterday, I complied a 60K word manuscript and exported using the preconfigured Courier manuscript, and I am trying to sort out if the problem occurred when I compiled it or after it was edited using ProWriting Aid. Initially, the text was fine for chapter 1, but then the other 26 chapters were compiled in chapter 2 which went from double spaced to single with a few paragraphs appearing much much smaller than the size 12.
Another copy which I complied was left flush and attempting to indent a paragraph-moved the whole page.
I am usually able to figure this sort of thing out, but this one has me baffled.