WD My Cloud EX2 Ultra doesn't sync Dropbox

Dropbox app on WD MyCloud EX2 Ultra does not sync properly. Dropbox v2.0

When first setup (which I have done few times now) it start to sync with Dropbox and download documents.
But after 20-30 min it Pause sync. when I try to start the sync again by clicking ‘Sync Now’ it flips back to Pause sync again.

Tried un-link and re-link Dropbox , issue still the same
Tried uninstall and re-install Dropbox app, issue still the same

Hope someone will have an answer to this issue.

Hi mynylix,

You should have a look at the link given below,