Developer Dashboard Still Showing Old Expired Sandbox After New Sandbox Provisioned

Hi team,

I need help with an issue involving the Microsoft 365 Developer Program sandbox.

I deleted my old Developer Program profile and rejoined using my Outlook account. I received a new welcome email confirming that a new instant sandbox was provisioned on 10th November 2025, but my Developer Dashboard still shows my old,  which expired on 3 November 2025.

It has now been 5 days, and the dashboard has not refreshed or linked to the new sandbox tenant.

Additional context: My previous sandbox should not have expired, because I was actively using it and did not violate any program terms. The incorrect expiration may have caused this backend sync issue.

Here is what I have tried so far:

• Signing in and out across multiple browsers
• Using Incognito / Private mode
• Clearing Microsoft cookies and cache
• Clicking “Join Now” again
• Verifying the new welcome email
• Attempting to sign in directly at admin.microsoft.com
• Waiting the recommended 24 to 48 hours
• Contacting Microsoft Support (case 2511101410000272)

The issue appears to be that my Developer Dashboard is still linked to the old, expired tenant instead of the newly provisioned sandbox. This looks like a backend synchronization problem that may require a manual re-link by the Microsoft Developer Program team.

I would appreciate it if the backend team could help re-link my Developer Program profile to the new sandbox tenant.