Q:

How to transfer PDF Reader Pro to a new device?

A:

As for PDF Reader Pro.dmg:

If you want to unbind your license code to one device and link it to another, please contact support@pdfreaderpro.com to claim your request with your license code and email address. We will unbind it for you.

 

As for PDF Reader Pro (Apple Store):

Download PDF Reader Pro from Apple Store with the same Apple ID in your new device and open it. You don't need to pay for a second time.