Uploading problems

I want to upload an ebook, but when I tried it says that it is copyrighted material and it could not be uploaded. However, I checked and somewhere on this website it says that you can upload copyrighted material as long as you do not share it. How can I upload a ebook/pdf file for personal use only?

If the ebook you are trying to import is under DMR protection, it won’t work.
Check out this post, especially the part mentioning Calibre: How to import and study books on LingQ that program will help you to import DMR protected material too (for Private use).