Hello and thank you for submitting your question.
Sure, you can register for free licence and use it along with Expert PDF installer file to activate Create module of Expert PDF onto another computer. This will also allow you to use for limited time of 14 days all other modules. Simply use the same setup file to install Expert PDF on your other computer and if the free licence registration windows doesn't show up automatically press on Create PDF button on the View module tab.
Expert PDF Support team