Hi @Dayto Mike,
Welcome to Microsoft Q&A forum.
Thank you for reaching out regarding the issue you encountered while trying to purchase Roblox Coins using your Microsoft account balance. The error message indicates that the payment could not be processed.
Before contacting support, we recommend verifying your account balance and payment settings at https://account.microsoft.com/account
If the issue persists, please contact Microsoft Support via the official channel:
- Visit Contact - Microsoft Support.
- Describe the issue (please mention the main keywords).
- Follow the prompts to get assistance.
If the issue persists, you can also reach Xbox Support at https://support.xbox.com/contact-us, as Roblox purchases through Microsoft Store often route via Xbox services.
Note: We appreciate your understanding of the support boundaries within this forum. As moderators, our role is to provide general guidance and assist with common troubleshooting steps. Please note that we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related payment issues. Our assistance is limited to offering general advice, and we’ll continue to support you within the scope of these responsibilities.