Text missing on mobile PDF

I’ve searched around and it seems it may be to do with how Apple devices handle unicode, https://www.talkgraphics.com/showthread.php?52704-PDF-export-text-not-showing-up

But frankly this does not help me.

Thanks for reporting this. I’m investigating using a different PDF creation library which may fix this issue, but to be honest this is not going to be a quick one to solve.

Thanks Chris, as I cannot find anything else that will do this job.