thanks! I’m really curious about that.
Right I heard back from them (delayed as I was overseas).
They said
"...
I do not think this font was designed to be used in a printed book. And there is not a fix I can recommend that does not include still using this font.
BookWright will display almost any font that is installed on your computer. But the program is unable to check if a font is viable for print. Using a different 'standard' font will most likely print as expected. But if you are looking for a font specifically to help dyslexics, I would recommend looking for more options that are designed to be used in printed books."
So unfortunately I have no option but to use a friendly-ish standard font. Shame but it can't be helped I guess, even though their wording is somewhat vague at best!I suppose at least they gave me a credit for the printed book that was unreadable.
Your work is still marvellous though - and I can see it has made a difference for those applications that are display, rather than printed, so well done you.