Why does the text look blurry or not in the correct font?
FlipViewer works with vectorized fonts for optimal viewing quality. The FlipViewer Creator software has to extract the fonts from the PDF for the vectorization; these are present not error-free, nor the optimum result can be achieved. Usually the PDF itself looks completely error-free, so that's ansich no indication of error. Whether there are problems with the font integration, you can find out by opening the PDF in Adobe Acrobat Pro, then "File -> Properties". Then you will find in one of the tabs the following view: PDF properties
The erroneous writings are marked by the light gray "F" icon. We then recommend the PDF again to be generated from prepress.