Add Crossplay

Before following these steps, make sure to stop your server first. This is to avoiding breaking anything on your server while you edit. 

Step 1: Head to your game panel and look for your Startup icon on the left hand side.
// Photos to be added on AH 2.0

Step 2: Look for the box that says ENABLE CROSSPLAY. When you find this box, just click on the slider and it will go grey to purple. Now you have Crossplay Enabled, if you want to disable it. Just click the box again and it will turn purple to grey letting you know Crossplay disabled.
// Photos to be added on AH 2.0

After Completing these steps, you can now go and start you server.