Hallelujah! A website that finally learned how to do H1, H2, (but not H3… I still see <b><i> tags when H3 would be more appropriate) in the HTML. And I see clues that Elementor may not be a great choice for any WordPress website (200+ divs everywhere). I’m not convinced it’s the best tool for the job… but it’s popular, to be sure.
DearFlip should work nicely, IF the PDF is sufficient. Putting up a PDF and then hobbling the enlarging size to less than 120% is counterproductive and a bad reading experience to be sure.
They’ll get there. I hope.