Cannot import from dropbox

I moved the back up to the public folder and copied the link after it was there as instructed. Just not sure what to put in the directory URL spot as this link below does not work. Thoughts? Hoping to migrate this before the AM! thanks!

https://www.dropbox.com/s/gjcnqmnaz08vbjk/sac-migration-to-godaddy-1546137302-181230-023502-4dfe48f3.zip?dl=0