During the 14-day free trial period of Foxit PDF Editor, you could switch Foxit PDF Editor from Foxit PDF Editor edition to Foxit PDF Editor Pro edition by doing the following:
Go to Help menu in Foxit PDF Editor, click on About Foxit PDF Editor, hit Change in the pop-up about dialog box, choose Yes if there is any User Account Control (UAC) message pops up. And then please choose Foxit PDF Editor or Foxit PDF Editor Pro edition you desire in the newly pop-up Foxit PDF Editor Activation dialog box, click on OK OK buttons. Finally, you have to restart your Foxit PDF Editor make the edition you selected take effect.