Impossible to Register for Baby Programme

I am trying to register my wife for the Baby Programme with Discovery without success. I keep getting told to register on the app but there is no option. We read the brochure on the programme and there's no mention of how to register. I went on the website and asked a question and it told me to "register on the website" - not saying where or how. I went onto the Whatsapp to ask the question - the SAME response as above. I went to the website to register my wife and they say that her contact details do not exist. I'm utterly confused at this situation as no-one can tell me how to register for a benefit that we pay for. It would seem that Discovery makes it exceptionally difficult to register in order to avoid paying?