Can’t read content with acrobat reader

I've been using acrobat reader on my iPad for about six months. It worked out perfect when I open PDFs from google drive. But now, when I try to do the exact same thing, I found my PDF with only the first page. Other pages are still in the file, but they are completely blank. I am sure my Acrobat reader is the latest version. What can I do to read the whole file?