WD Discovery Syncing service is taking ages

I have a WD my Cloud Home. I installed the Discovery software and activated the Syncing service on one backup folder (about 800 GB).
The service is taking ages to sync it.

I keep my PC on night and day for about one week and the transfer only worked for less than 2-3% of the content and it is still pending.

Is this slow rate compatible with the expectance?
Is there another solution to improve the situation (such as a third party or additional WD software)?

Thanks
Filippo

I have same problem. Is this normal or are we doing something wrong?