How does collaboration mode work?

I just shared a link for a collaborator, (through the Mac App)
however when the link is visited they get this,

Ahh I assume they need marginnote installed…

Hello

Hi! Make sure that they have the latest version of MarginNote 3 installed. If this still fails to work, feel free to contact me.

Kind Regards,
MarginNote-Sushi
Support Team

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