Hi, I'm a writer. I wrote this book Soldier of Pain.

It sells extremely poorly on Amazon and I don't have money to market it. I've sold over 300 copies to people who read it cover to cover. Which is pretty good considering I only have word of mouth. I've had offers from Marvel and the Syfy channel to buy the idea outright, but I am much too parental to accept less than $25,000 dollars for my original concept without being part of the creative team working on it and being credited for my original work. These people wouldn't even give me royalties. Anyway, it's a sad story bro.
I want to edit the original copy PDF copy. (That's because I deleted the thumb drive with the original copy on it, OOOPS.) I need to add a new cover and update the story and the book itself a bit. It has horrible formatting.
I tried simply importing the PDF into the Latest Version of Scribus... Which turned it into MUSH. I use several different languages to tell the story with subtitles in English. Those foreign fonts probably is the reason it's just turning into crap.
I don't blame Scribus for this, this was all the fault of this freshman Writer. But I am a good storyteller and my stories are Awesome. Or so the people that read them say. I just want to use Scribus to create a document that looks as good as it reads.
Is there any other way other than simple copy and paste to do that?
Please help.