Don't use spaces, punctuation, or special characters in your filenames!
BOLT doesn't like those things in filenames and may not accept your file.
Your professor wants you to submit a paper to the Paper#1 Dropbox. You create a document file called paper#1yourlastname.docx. When you go to submit the document to BOLT, you cannot upload your file.
Q: Why does this happen?
A: BOLT does not like the # sign in your filename.
Q: How can you fix it?
A: Remove the special character from your filename (paper1yourlastname.docx for example) and make sure there are no spaces or other punctuation marks in your filename. Then try submitting the renamed file to BOLT.