MAICPP enrollment blocked — tile greyed out, no workspace, support ticket submission fails

Hello Partner Compliance team,

We are trying to enroll a tenant in the Microsoft AI Cloud Partner Program (MAICPP) in order to complete publisher verification for an Entra ID app registration on a custom domain. The "Microsoft AI Cloud Partner Program" option is greyed out and cannot be selected on the program-selection screen at partner.microsoft.com.

We have already verified:

• The custom domain shows "Verified" in Entra ID under Identity > Settings > Domain names
• Signed in with the tenant's Global Administrator account, confirmed as Global Admin in Entra ID
• Retried in multiple browsers and in private/incognito sessions with all Microsoft sessions signed out first, with the same result each time

We have also tried, and both have failed:

• The normal in-portal Partner Center support ticket flow, which fails because no workspace exists yet for this account
• The no-sign-in support form at partner.microsoft.com/support, where the Submit button returns "There is a problem submitting your request, try again!"

Because no Partner Center workspace has ever been created for this tenant, we have no self-service way to open a ticket. Could someone from the team please manually review this and either unblock the enrollment tile or open a case on our behalf?

Happy to provide the Tenant ID, domain, and any further details privately via DM.

Thank you.