It seems that you are encountering an issue with adding your phone number due to the country code not being supported by the system. Azure's sign-up process does not support every country or region for phone verification. If your country/region does not appear in the country code list during the sign-up process, you will not be able to add that phone number for verification purposes.
Here are some steps you can take to resolve this issue:
- Double-check that the country code you are using is correct and supported by Azure.
- If your country is not supported, consider using an email address for verification instead.
- If you have access to a different phone number from a supported country, you might try adding that number instead.
If you continue to face issues, it may be helpful to reach out to support for further assistance.
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