This is Under Review
Thank you for your feedback.
This is currently under review.
Thanks for the post , votes, and comments. We are aware of this limitation and are targeting sometime next year to improve this experience. In the meantime you can sign up for a new account in your desired country and transfer your assets to the new account via Support.
-Azure Billing TeamAymen commented
our customer is a worldwide company and HQ moved from Portugal to Tunisia.
They are trying to change CSP provider and facing same limitation.
Even worst, now with Azure, facing same errors "The Offer is not sold in the subscription/account region" deploying Fortinet Marketplace items.
CSP is very limited and we are facing many problems with it.
Support for migration to Azure Stack is in the backlog, but not yet prioritized. Please use the comments section and upvote the ask if you would like this functionality to light up soon.