Hello !
Thank you for posting on Microsoft Learn Q&A.
You posted the tenant ID publicly please consider removing it from public threads.
Microsoft flags Entra tenants as inactive when there’s no portal or account activity for an extended period (even if you were still calling APIs) and that state leads to a login block and eventual permanent deletion if not reactivated.
You should keeping your subscription active and get periodic portal sign-ins to prevents this.
https://learn.microsoft.com/en-us/entra/fundamentals/inaccessible-tenant
Microsoft can usually unblock an inactive tenant only within a short window (variously documented as 20 to 30 days from the block). After that, the tenant is permanently deleted and cannot be recovered. If you’re still within this window, proceed to step 2 immediately.
What I can recommend is that you open ASAP a support ticket from any accessible tenant or subscription that you have.
If you can’t access any tenant to file a ticket you can use Microsoft regional support phone for Azure billing and account issues and reference the same details and error code.
https://learn.microsoft.com/en-us/answers/questions/2282516/how-can-i-unblock-my-tenant-it-was-blocked-due-to
Keep in mind that once past the MS grace period, recovery isn’t possible and you must create a new tenant and reprovision identities and app registrations.