Hi All,
I have had the same problem today: trying to verify my number but received the same message (You'll need to use a different phone number, we can't support this one.). I have tried to omit the zero, use the application but they did not work. What did work with me, is using a genuine Virgin Media mobile number. So what you need, if you have a UK mobile number, is a SIM card that you bought from one of the main Mobile providers like Virgin Media, Vodafone, etc. And you haven't transferred your number to them from companies like Lycamobile (that what had happened to me as I was using Vodafone number which was originally Lycamobile.)