terrrible at converting office file

I like the pdf expert by the same developer very much, and bought it to convert ppt and word into pdf. I like they integrate it with the pdf expert but it doesnt do the job, at least for the office files Ive tried. totally mess up the text in ppt and format in word is not right as well. (Notability can do a better job at it, its not even a converter app)

YolandaCYC about PDF Converter by Readdle, v2.2.1