Hi @Jackson, Chris ,
Thanks for sharing your experience. For international users, there are some formatting requirements for the phone numbers that are a bit different, and there are some feature backlog items to improve the experience. I would recommend having those users try these steps:
- Have the user enter the phone number with a space added between the country code and dropping the leading zero. Example: +44 1234567890
- Check the MFA logs. If you see an invalid phone input error (like "UserVoiceAuthFailedInvalidPhoneInput"), it usually means that there is an issue with the service provider reaching the MFA service.
If neither of these options help, I would recommend creating a support case or sharing additional logs with me so that I can better troubleshoot. The support engineer will be able to look at your setup and isolate the issue to the service itself, the environment, or the service provider.
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