To receive an incoming call and use the calling phone number's last digits, choose "Dropped-Call Verification" in the list of services.
The operators that support dropped-call verification include Virtual58, Virtual51, Virtual53, Three, Ee, and Vodafone.
It seems you need some additional help that we can't provide in this wizard. Please send a request to the support service and we will respond as soon as possible.
Important rules - help us to support you:
If you are a 5SIM user, be sure to use the same email address as your account.