When registering as a Dev account, all my cards get refused (Error 6152). Please help!

I just bought a Xbox Series S and installed the Dev kit App.

During the process of registration as a developer account, all my cards get refused and I get an error message (error 6152).

It is not a problem with my bank accounts or cards, as I tried using several different cards, and also one from my wife. I am based in Portugal and I saw a similar complaint from someone from Portugal as well.

I also cannot use the Partner Center Support as I do not have access to the Billing workspace.

I already tried changing the location tag to en-us when beggining the Registration process.

What should I do? Can I pay for a promo code?

Please help!

:)