I just bought and am setting up a brand-new WD MyCloud EX2 Ultra NAS, and was able to install the Dropbox app on the device. I set all of my sync parameters appropriately, as I would like to (at least to try it once) download all my Dropbox content and sync it with my Dropbox account*. In the admin dashboard for the WD device, I was able to start syncing, and it...seems?...like it's syncing, but it only syncs one of my folders, despite having Selective Sync turned on and all of my Dropbox folders checked. It's been almost 24 hours since I started the sync and I only have about ~ 4 GB worth of stuff to sync, so I don't know why it appears to have stopped at/during the first folder, or what's going on. WD says that all tech support questions about the provided/available apps should be directed to the 3rd-party vendors, so here am I. Thanks in advance for any assistance.
*To be clear, I am not trying to switch where my Dropbox account is, nor am I planning on getting rid of Dropbox. It says I have the ability to sync with Dropbox, so I want to test that and see it work.