Missing Text

I’m new to Scrivener and am primarily using my PC - even though I also have the MAC version, too. I have completed my book, but text seems to be missing, almost like the program is paginating and the missing text will reappear if I wait long enough. However, that never happens. I know the characters are there because the word count is right and sometimes if I search “The End” for example, then all the missing text will reappear. Now I’m trying to compile, and it’s not working well. I need some help. Any suggestions?