[URGENT] Sole Global Admin locked out due to MFA (Error 500121) - Support Ticket Blocked

Hi,

I am the sole Global Admin of my Azure tenant. I know my password, but due to a phone replacement, I lost my Microsoft Authenticator app. I am completely locked out at the 2-digit MFA prompt (Error 500121).

Since I am the only administrator, there is no one else to reset it for me. I tried to open a billing/account support ticket from a temporary account, but the automated system rejected it, stating that tech support is not included in the Basic Plan.

Could a Microsoft Moderator/Engineer please help me open a backend security case and escalate this to the Data Protection / Tenant Recovery Team? I can provide my subscription ID, billing credit card, and all ownership proofs in a private channel.

Affected account: ******@gmail.com

Subscription ID from my temporary account: 3df583a1-9a82-4825-81bb-0fa050b5d3ee

Thank you.