Not all links exports into PDF file

Hi
It's been a while since I was active on TalkGraphics.

I have created a 40 pages book in Xara Designer Pro X ver 19.0.1.xxxxxx
The table of content and all text links exports without problems. I have created several internal (page reference) links and graphics and QR codes which have been hyper linked, but when I export the book to PDF, they don't come up as links. I have copied some of the graphics and QR codes to a new document, and when exported to PDF they work fine!

Are there a limitation to how many, or the mix of links you can have in one document? or am I missing something?

Thanks in advance :-)

I don't know the answer but I doubt there is a limit on links. One of the members will have a better explanation.

I produce a newsletter that I send in pdf, and all the links work. I haven’t thought much about the number of links. I just counted my last letter and I had five links.
Exported to PDF with no special options, other than “produce for email”