Yes, you are welcome to experience a 7-day FREE TRIAL as the following instructions:
1. Download PDF Reader Pro.dmg;
2. Open it -> Upgrade to Pro -> Free Trial -> enter your name and Email then activate it.
Note: The free trial version is from our official website. If you cannot upgrade, please check whether there exist different versions on your computer. If so, please uninstall the all, and install it again from official website. Then you can enjoy the free trial.