In short, this is not possible but you do have options. The phone number you used to sign up to NabyPay is used to authenticate your NabyPay Account. Once you have authenticated your phone number, it cannot be changed. To use another phone number, you will need to create a new NabyPay Account, which you can have ready to use in just a few minutes. If you no longer need a NabyPay Account, you can request it is closed.

➜ Closing a NabyPay Account