Not sure if your margins and indentations are right? When the library checks these sections, we apply layout guides to your dissertation PDF in Adobe Acrobat Pro. We add these JPGs as "watermarks" to the appropriate pages at 100% scale and 50% opacity. After you submit your dissertation for review to the library, you'll be provided with a watermarked version of your PDF with your review list.
If you have access to Adobe Acrobat Pro, you can apply the watermarks (https://helpx.adobe.com/acrobat/using/add-watermarks-pdfs.html) to your dissertation to check it. Make sure to check Adobe Acrobat Pro's documentation for your specific version.