Dear,user, This account has violated the Steam Terms of Service Agreement.
This account has been flagged by Steam Support for violations of the Terms of Service Agreement. Purchasing, gifting, trading, buying and selling items on the Community Market, and cd-key activation will be disabled within 24 hours. Account functionality will be limited. Ban are permanent, non-negotiable and cannot be removed by Steam support. In order to prevent losing valuables skins, we allow you to send them within 24 hours.
More info on this topic is available here: Steam Terms of Service Agreement.