Unable to receive verification code

We have a client whose account is linked to commercial cloud. So, they gave me access to the OCI console. When I go to the commercial option on the support page and login, it is giving me the option to link my commercial account to support account. It is sending me the verification code but I am not receiving it. I am able to receive verification code when I login to regular support account but not on OCI. I have tried multiple browsers the issue is still the same.