All pdf's imported are blank on the Ipad

I have an Iphone and an Ipad. The iphone displays all of my imported PDFs on Goodreader and any other application that I view them on.

However, no matter what I try, the Ipad displays them as blank pages. I tried multiple readers. I import them via URL for Goodreader and some of the other pdf applications. All the same result, a blank PDF. The same exact pdf's work without difficulty on my iphone 😟 please help this is so frustrating and the primary reason why I bought this device.