Sorry you're running into this. Since the purchase window (Microsoft Store Experience Host) loads but turns blank after selecting a payment method, the issue may be with the Experience Host component rather than the game itself.
A few things to try:
- Ensure Windows, Microsoft Store, and Microsoft Store Experience Host are fully updated.
- Sign out of the Microsoft Store, restart the PC, then sign back in.
- Go to Settings > Apps > Installed apps > Microsoft Store > Advanced options and try Repair then Reset.
- Run the Windows Store Apps troubleshooter: Settings > System > Troubleshoot > Other troubleshooters.
- Test with a different payment method or a Microsoft account balance, if available.
- Try making the purchase from a different Windows user profile to rule out profile corruption.
Hope this helps. Feel free to update here if anything comes up!
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