Steam to Xbox Account Link Failed - "Grounded could not be linked to a Microsoft account"

Hello,

I am having trouble linking my Microsoft/Xbox account in Grounded on Steam to unlock achievements and play cross-platform.

Details:

- Platform: PC Windows 10 (Steam)

- Xbox Account: henriqueabrahaolopes [AT] hotmail [DOT] com

- Issue: Clicking "Enable Cross-Play" [L] opens the Microsoft authorization window. I log in and click "Accept", but the game immediately returns the error: "Grounded could not be linked to a Microsoft account at this time."

Troubleshooting completed on local system:

1. Re-enabled and forced Teredo state to qualified / enterpriseclient.

2. Cleared Windows Credentials Manager (Xbl|DeviceKey and XSAPI tokens).

3. Revoked and re-granted app permissions on account.microsoft.com/privacy/app-access.

4. Set all Xbox Privacy & Online Safety settings to "Allow".

It seems my Steam ID might be mapped to a mismatched token/binding on the backend. Could a moderator or developer help reset this link?

Thank you!