Steam Setup For Multiplayer Not Working

I put the Steam API on my project and at the started worked, but now simply stopped and I can’t figure out why I am running in Standalone Mode, I Have The Subsystem Enabled, My Steam is opened but still nothing.

Also, i created another project and setup the same way I did before and it worked. Still, dont know what is causing to not work on the other project.

Solved! The problem was that in the Advanced Settings I unchecked Use Single Process and then checked again using Multiplayer Mode “Play As Client” and not “Play Offline”, I just put “Play Offline and it worked”