If you get an error "Cannot activate Win2PDF online. Please contact email@example.com", you can try the following:
•Right click on the "Enter Win2PDF License" and choose "Run As Administrator".
•Temporarily disable anti-virus software that may be blocking the network connection to the Win2PDF activation server.
If these steps don't fix your problem or if your PC does not have an internet connection, contact firstname.lastname@example.org for activation instructions.