Cannot able to addy mobile number in my OnePlus profile via OnePlus 7T

  1. Sundar786
    Froyo Sep 17, 2020

    Sundar786 , via OnePlus 7T , Sep 17, 2020 :
    I am trying enter my details in Red cableclub, other details are entered successfully, but my mobile number cannot able to add. if I am trying to add my number, it shows this is already registered number.
    But now only I am trying to add.

    Kindly guide me to resolve this issue.