Error connecting to Online Match

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I've managed to create a match using Thunder, but when I try to join I get this exception

PhotonNetworkManager :: OnMatchCreate :: Create failed: D:0 A: P:0 [ NET:1544803905 | NODE:2 | ACC:UnityEngine.Networking.Types.NetworkAccessToken ] R:False
UnityEngine.Networking.Match.PhotonMatchmaker:handlerOperationResponse(OperationResponse)
ExitGames.Client.Photon.LoadBalancing.LoadBalancingClient:OnOperationResponse(OperationResponse) (at /Users/ramonmelo/Documents/ExitGames/Thunder/PhotonThunderUNet/Thunder/PhotonLoadbalancingApi/LoadBalancingClient.cs:2141)
ExitGames.Client.Photon.PeerBase:DeserializeMessageAndCallback(Byte[])
ExitGames.Client.Photon.EnetPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:Service()
ExitGames.Client.Photon.LoadBalancing.LoadBalancingClient:Service() (at /Users/ramonmelo/Documents/ExitGames/Thunder/PhotonThunderUNet/Thunder/PhotonLoadbalancingApi/LoadBalancingClient.cs:838)
UnityEngine.Networking.Match.PhotonMatchmaker:FixedUpdate()

Any ideas?

Also, _please_ update your documentation. We need more than just a very basic example to figure out how to use this.