Photon server is set up properly but ...

Hello,

My server is set up properly but I have this message when I run my game :
"The appId this client sent is unknown on the server (Cloud). Check settings. If using the Cloud, check account.
UnityEngine.Debug:LogError(Object)
NetworkingPeer:OnOperationResponse(OperationResponse) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:1058)
ExitGames.Client.Photon.PeerBase:DeserializeMessageAndCallback(Byte[])
ExitGames.Client.Photon.EnetPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:DispatchIncomingCommands()
PhotonHandler:Update() (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonHandler.cs:83)"
Any idea ?

Please help

I didn't find the right solution from the internet.

References:
http://hutonggames.com/playmakerforum/index.php?topic=8629.0
Animated Explainer Video Production Studio

Thank you