Microsoft Engage Center: Support for Business workspace stuck loading after “No Access”

I can sign in to Microsoft Engage Center using my personal Microsoft account.

The portal initially displays “No Access”. The workspace selector lists “Support for Business” (type: Sfb). After selecting it and clicking Save, the portal remains on a blank loading screen and does not open the support request form.

Please investigate the workspace access/loading issue and provide a working route to Support for Business. Please also clarify whether any account onboarding or entitlement assignment is missing.

Screenshots showing the workspace selection and loading screen are available.

This question concerns access to the support portal. I already have a separate Windows API discussion on Microsoft Q&A, but I cannot submit a formal support incident because the Support for Business workspace does not load.