Hi Deborah,
Welcome to Box Community and glad to help!
Looks like you don't own any folders in your Box account. Did you try to check your permission in the affected folder? To make sure you have enough permission to upload files, please visit this helpful article.
Additionally, did you happen to have noticed an error message? If yes, please submit a screenshot in this forum.
We'd love to further assist!
That was no help at all. None of the people on this list can upload files to the BOX. Elizabeth is not with the company and Colleen is not doing this task.