How to check my Steam Guard status?
This article will help you check if your Steam Guard is active on Steam.
Steam page
You can check the status of your Steam Guard in the "Account details" section on Steam: Steam Home > Account Details > Account Security Scroll down to "Account Security". You should see the green shield with "Protected by Steam Guard Mobile Authenticator" status
If you see the red shield (“Steam Guard is not enabled for this account”) or yellow shield (“Protected by Steam Guard email”), you do not have an active Steam Guard Mobile Authenticator and need to set it to trade on Skinomat. See this article for detailed instructions how to do this
Steam app
On your phone, open the Steam app. Click on the shield icon in the middle of the menu bar at the bottom of the main page
If your Steam Guard Mobile Authenticator is active, you will see an option to scan a QR code