I recently purchased a Sannce DVR (Model No D8908) and setting up the remote was very easy, none of this messing about with settings at all.
Just set up an account with XMEye.net with a User Name And Password and a name for the system I want to view.
Then install the XMEye app for android onto the phone/tablet, when you open the app you are asked to input the Serial number of the DVR, and hey presto remote viewing is done.