Trying to share link to file on cloud - recipient gets an error saying link is "no longer active"

I am trying to share a video file stored on Adobe Creative Cloud storage. I click "Send link", check "Allow file download", enter recipient's email address and click "Send link." The recipient receives the link in an email message but when they try to use the link to access the file they get an error saying the link is "no longer active". There was very little delay between sending the link and their trying to use it. I can watch and download the file myself on my Creative Cloud storage. This service is fairly new to me. Please let me know what I am doing wrong.