It’s very strange! No, sadly, I didn’t used to be Pro.
I tried duplicating but it only returned the 10 slides (and 10 in preview) although the “header” was also wrong at 12 slides.
I have added the missing slides back in so that the information appears on the front end but, of course, it increases the count by 2 (ie the count is always more than the missing slides….)
It’s not a big problem but thought I should point it out at least (even if I can’t get it fixed!)
Thanks!