Issue with Microsoft Developer Subscription

Question

1. Issue type: Can’t sign in to subscription
2. Dev Program domain: p6qz.onmicrosoft.com
3. Admin account: ******@p6qz.onmicrosoft.com

Hello Microsoft Developer Support,

I have activated my Microsoft 365 Developer subscription using the domain "p6qz.onmicrosoft.com" and the admin account "******@p6qz.onmicrosoft.com". The subscription status shows as Active, but I am unable to sign in to https://portal.office.com or https://admin.microsoft.com using the admin credentials.

It says the account does not exist, although it was just created. Please assist in resolving this issue or reactivating the admin access.

Thank you,

Henry