Child Minecraft/Xbox sign-in in South Korea requires PASS verification and rejects parent’s DOB despite parental consent

I am a parent in South Korea trying to let my young child use Minecraft on an Android tablet with the child’s own Microsoft account. The child is under 14 and has no mobile phone or mobile number in their name.

What works:

• The child’s Microsoft account was created with the correct date of birth and country (South Korea).
• The child is in my Microsoft family group. I already completed parental consent and allowed the relevant app/third-party access.
• The child can sign in to the Microsoft account website.

What fails:

• When the child tries to sign in to Minecraft/Xbox, Microsoft redirects to South Korea’s carrier/PASS identity-verification service.
• If I verify with my own phone, it fails because the date of birth associated with my mobile subscription does not match the child’s Microsoft account date of birth. This mismatch is unavoidable: I am the parent, not the child.
• The displayed verification flow offers no parental verification or I-PIN alternative. The child cannot complete telecom verification independently because the child has no phone.

Xbox Support case 7110903948: a support agent confirmed the date of birth, family setup and parental consent, but recommended contacting PASS. That does not resolve this issue because the Microsoft/Xbox login flow is what requests and redirects to this verification. PASS only checks the identity of the mobile subscriber.

Microsoft’s Korean parental consent guidance states that customers in South Korea may use I-PIN for parental consent or age verification. How can a parent use the supported parental consent / I-PIN route to complete the child’s first Xbox/Minecraft sign-in, without changing the child’s real date of birth or requiring a phone in the child’s name? If this login flow is incorrectly treating the child as an adult needing their own subscriber verification, which Microsoft identity/family/Xbox team can investigate and correct the redirect?

Please provide an actionable supported process or escalation path. I am intentionally not including the child’s name, email address or date of birth in this public question.