Don’t worry, some publishers take longer than others to go through their pending requests, and often it varies even on a book-by-book basis. We regularly monitor pending requests and reach out to publishers if we see a backlog, so hopefully you'll hear from the publisher soon regarding your request.
If the book has been archived, and is no longer available to download, your request will be automatically processed within 30 days of the Archive Date. When that happens, the book will remain in the Not Active section of your Shelf and will not affect your Ratio.