I had just renewed my family visa few days back.
Just text message to 92727 as follows.

first type digit 7 and type your wifes id number and send.
if u have kids continue with, again type 7 and first kid id number and type 7 and second kid id number. There should not be any space in between. accknowledgement will come in arabic. after 5 days(may before) go immigration.