Hi, I have made a pdf which passes all accessiblity, however when I use the read out load function to test reading order it does not work/there is no sound. It works on individual lines but will not read the page from top to bottom. I have tested it on another iMac computer and it works fine. I have checked the preferences and disabled enhanced security in the security options but this makes no difference. I have also tried different read out loud voices but again no difference. I also uninstalled and reinstalled acrobat.
I am running Acrobat DC on iMac, OS Mojave version 10.14.6.