Points not working?

I've been trying to script a points script that will act as an "Elo rating", but nothing's working at the moment.

local points = game:GetService("PointsService")

game.Players.PlayerAdded:connect(function(player)
    local leaderstats = Instance.new("Model")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local pointers = points:GetGamePointBalance(player.userId)
    if (pointers == 0) then
        pointers = 1500
        points:AwardPoints(player.userId, pointers)

    local pointsystem = Instance.new("IntValue")
    pointsystem.Name = "Rating"
    pointsystem.Value = pointers
    pointsystem.Parent = leaderstats
    end
end)