After quite a lot of testing I found the problem!!
This is a bug of the My Cloud firmware…the solution is simple:
The dropbox app will only manage to complete the authorization process if the admins user name on the My Cloud is “admin”.
So the only thing you have to do is to change the admins user name in the My Cloud Dashboard (the one with the green tick) to “admin”. I changed it after installation to my personal name…this makes the Dropbox app fail to authorize.
As soon as I named the user “admin” it worked without a problem!
Will try to report this to WD…but if they read this they should file a bug for this.
Regards,
Lars
