Editing with PDF Fusion

I purchased Complete PC Office Suite 4, Corel OEM, on Ebay in March 2015.  When I first purchased it I used PDF Fusion to edit PDF documents.  It quit allowing me to select individual characters, words, paragraphs and I could only select a whole page, thus no longer being able to edit selected portions of a document.  In an effort to remedy the problem, I reinstalled it in September 2015.  I am still having the same problem.  Since this is an after-market copy, I was not able to get help from Corel's technical help people without subscribing to the service.  I think that some simple solution may be available if one knows how to navigate this program.  The User's Manual provided no help.

Any help will be appreciated.