Standard Bank cell phone application says cell numbers are invalid when I try add a recipient

[StandardBank]

Hi Clinton811, please verify with the recipient, if the numbers are correct. 

[StandardBank]

@lindahntsele, please confirm which branch you visited to change your contact details.

[lindahntsele]

I have changed my number at DA bank but my cell phone banking is still registered in my old number ...can u help m

[clinton811]

standard bank cell phone application says cell phone numbers are invalid when I try to send an instant voucher.