Sharing your familyfile from Dropbox

[Harvey Researcher]

Hiya. I have my Reunion familyfile in Dropbox and use ReunionTouch.

My cousins are currently holidaying in our ancestral home, and also bought ReunionTouch, so they can see my familyfile.

I shared the file with them from within Dropbox, and it doesn't work.

How should we be doing it please?