Yeo step verification

[Colin183]

They have the wrong mobile number and keep sending it to my old number how can I add my new number it won't let me

[Mark39]

You mean Verification Codes are being sent to your old mobile?

If you made a note of it as Sky recommended you can use your Recovery Code to turn off 2 step login, then set it up again with your new number. 

If you didn't make a note of your Recovery Code, you'll have to call Sky and they'll turn it off for you. That may take a while.