The problem is now resolved. See the comment on the top.
According to the instruction sent by the ICPC WF organizer, we should upload team reference document by 25th March.
However, when I opened the WF team dashboard and clicked "Attachment", anything like uploading button didn't appear. My friend joisino said he couldn't upload his document as well. Thus I think it's a problem with the webpage, but I'm not sure.
Have you succeeded in submitting your document? Please let me know.
Maybe only your coach has the permission for uploading attachments. (It is the case for my university.)
Thank you very much! We asked our coach and he saw the upload button.
My pleasure. Good luck on World Finals!
Auto comment: topic has been updated by maroonrk (previous revision, new revision, compare).
Your problem has been solved and my comment is somehow irrelevant.
But, this is for the ones who have not generated their notebooks yet: https://github.com/Erfaniaa/codes2pdf
I hope it helps them.