I have installed moodle 2.9 on local server with XAMPP and tried installing PDF Feedback and PDF submission plugin.
It was giving some error , hence upgraded moodle to 3.0
1. Both the plugins do not work, as its showing hidden icon, i clicked on the eye icon to make to ON, it worked for a moment and again it goes OFF.
2. When tried adding assignment and submission, the Annotate PDF does not appear.