Changing of Mail Id and Mobile number GST portal

GIRI.R.A (INTERNAL AUDITOR) (133 Points)

05 March 2018  
Hi friends,
I am facing a problem of changing the New mobile number and Mail I'd towards OTP,
I have in portal - services-noncore- and updated,but also it's not working ,what can I do pls suggest me.
It's a Proprietor ship concern.
pls help me
Thanks with regards
Giri.R.A