Coin Dev product not working? [UNANSWERED]

Hi guys! This completes the purchase, but does not award the coins. Any ideas? Thanks

Script in textbutton:

local MarketplaceService = game:GetService("MarketplaceService")

local productId = 22343529

-- define function that will be called when purchase finished
MarketplaceService.ProcessReceipt = function(receiptInfo) 

    -- find the player based on the PlayerId in receiptInfo
    for i, player in ipairs(game.Players:GetChildren()) do
        if player.userId == receiptInfo.PlayerId then


            -- check which product was purchased
            if receiptInfo.ProductId == productId then

                -- handle purchase
                player.leaderstats.Coins.Value = player.leaderstats.Coins.Value + 100
            end
        end
    end 


    return Enum.ProductPurchaseDecision.PurchaseGranted 

end

localscript in textbutton:

local productId = 22343529 -- change to your developer product ID
script.Parent.MouseButton1Click:connect(function()
    game:GetService("MarketplaceService"):PromptProductPurchase(game.Players.LocalPlayer, productId)
end)