This is a Windows 10 machine.
I have tried quitting and restarting the dropbox app.
I have tried uninstalling and reinstalling the app.
I am viewing the correct folder -- I clicked the folder icon on the dropbox app.
My other machine, a laptop with Win 11 on it shows the green checkmarks properly.
It would be nice to have these checkmarks so I can see at a glance if a file is synced or not, rather than opening the app and hunting through the sync history.