I have an issue entering my billing information as it is not accepting the postal code, it is telling me Incorrectly formatted postal code. My postal code for Malta is ZRQ1653

It still didn't resolve my problem

Hi Antoine,

Thanks for reaching out. I understand how frustrating it can be when you’re trying to upgrade OneDrive and the system rejects a valid postal code. This usually happens because Microsoft’s billing system enforces region-specific formats, and Malta’s alphanumeric codes sometimes aren’t recognized correctly.

First, make sure your Microsoft account region, billing address, and payment method country all match. If they differ, the postal code validation will fail.

Second, try alternative formatting such as adding a space or a dash, for example ZRQ 1653 or ZRQ-1653. This has worked for other users with similar issues.

Third, update your billing address directly at account.microsoft.com under Payment & Billing → Address, then retry the purchase. This often bypasses app restrictions.

Last, if the issue persists, consider using other payment option like PayPal or contact Microsoft Billing Support through Get Help for manual assistance.

I hope you find this information helpful. Please let me know if you have any further questions If the answer is helpful, please click "Accept Answer".

Regards,
Carlo