PDF document "converted" to Word is NOT editable

I downloaded your PDF to Word conversion software. I then did a conversion so that I could do some editing of my document that I had previously created. I do not have the original Word version. But that converted text could not be edited. I do not understand the point of such a software that does NOT allow one to edit a document that presumably has been converted into word. Or perhaps it has NOT been converted? I have just wasted my time.