Support for the free version of the PDF Embedder plugin is provided on the plugin forum on WordPress.org.
In rear cases when we can’t help you on a forum or you can’t find the answers to your questions in our documentation articles, please get in touch with us by email.
All paying customers with an active license have access to our premium support with much faster replies. You can fill in your request from your account Support page.
It’s always helpful if you can send us a link to a page on your site showing any problem you’re having so we can see it for ourselves. Other screenshots and as much information as possible is always appreciated.
Also let us know which version of the plugin you are using.