Thank you for reaching out. I see that you have a PDF in your library now, but wanted to respond in case you are still having trouble. Your library capacity is 2GB, which should be enough room to upload several PDFs. But, keep in mind that the file size limit for a single PDF is 5MB. Anything above that will not be able to get uploaded. One way to combat this is to compress the PDF. There are several sites that offer this for free. I hope this helps.