How do I work with a friend?

I'm trying to edit a video at the same time as my friend through Resolve Cloud, but when I open the project, the files say Media Offline and I can't replace them because the MP4 doesn't show up. I thought that when I put a project on the cloud it would include all videos? Am I doing this wrong? Can yall help please! Thanks!

Only the project is on the Cloud. You have to take care to put your proxies on Dropbox and share them.