@Marco Thanks for reaching out. Kindly note Marketplace is not supported on Microsoft Q& A.
- You can post your question on Microsoft Partner Community.
- Raise support ticket on Marketplace Publisher Support.
Guidance
- Marketplace Quick Start Guide and videos: https://aka.ms/SellThroughMarketplace
- The quick start guide links to deeper articles and how-to content in the Docs publisher guide: https://aka.ms/MarketplacePublisherGuide