I'm running Dropbox on a Mac (OS 12.5.1), collaborating on a book with co-authors using PCs. I've installed a PC emulator (Parallels Desktop) mainly to enable the use of Zotero, which runs very slowly once a document gets to a certain size on Mac. When I have the document open in Mac, the Dropbox badge warns me if a collaborator is also in the doc (very useful). But in the PC, there is no Dropbox badge. I've tried downloading Dropbox from there, but it only gives me the option of 'Dropbox for S mode', whatever that is. I've downloaded it, but there is still no badge. Worse, it appears that the changes that I make while in the emulator do not alert the other authors that I am working on the document. Can you help? Thanks, Brett.