Why doesn't the teleportservice reserverserver function work?

local TS = game:GetService("TeleportService")
local PrivateServer = TS:ReserveServer(530253978)

script.Parent.Touched:Connect(function(H)
    TS:TeleportToPrivateServer(530253978, PrivateServer, game.Players[H.Parent.Name])
end)

It says that it is forbidden.(error 500)