Domain Mapping simply does not work

I have installed & network activated the Domain Mapping plugin on which is a multi-site.

I have created the following sub-sites:

I have changed the DNS A RECORDS to the IP for for the following 2 domains:

I have done the necessary mapping within &

I need to have the sites resolve as follows: to
and to

I simply cannot get this to work since just gives me a blank page & still goes to it's original location.

I have spent many man hours on this - Pls, pls I need some asistance on this urgently!