Unet matchmaking

How to make matchmaking working?

I added Cloud Project ID to PlayerSettings, but when i want to start an internet match i got an error:

Create Failed:[[UnityEngine.Networking.Match.CreateMatchResponse]-success:False-extendedInfo:Failed CreateMatch for appId=Invalid]-address:,port:0,networkId:0x0000000000000000,nodeId:0x0000,usingRelay:False
UnityEngine.Networking.Match.<ProcessMatchResponse>c__Iterator0`1:MoveNext()

What i have to do?

Okay. Now that is working, but when i create online match i have that errors and nobody can join:

Check out this answer here, could be related to known issue. Matchmaking Server Down?? - Unity Engine - Unity Discussions