Yes on adding notation, When ever I run my app on simulator I able to add a notations like highlighter/Underline/StrikeOut, but when I run the app on device it does not add the notations. after adding notation it did not render notations and gives notation count 0 on particular page.
Even I downloaded demo code again and call PDFGlobal class method
with appropriate parameters(those I got after purchasing license key) it returns 1, that means my credentials are right. It works on simulator fine. and when I use same code on my device, annotation features not working.