Hey @bridgetdps, I'd be happy to look into this with you!
Would you mind clarifying the OS on these devices, along with the Dropbox version that's installed there?
You should be able to find the desktop by hovering your mouse over the little Dropbox icon, next to your WiFi on your menu/task bar.
I'd appreciate it if you could also share with me the troubleshooting steps you've already tried on your end, in order for us to avoid repeating them.
Thanks a bunch!