What's wrong with my developer products!? URGENT- GAME CURENTLY HAS 600+ PLAYERS

So I've gotten several messages that in my game that sometimes the developer products aren't working. Is there something wrong with my script?!?

wait()
local MarketplaceService = game:GetService("MarketplaceService")
local character1, character2, character3, slotid, subs1250, subs100, views25000, views5000 = 42907443, 46692064, 46536644, 45098689, 45145715, 45145621, 45160253, 45160240
local PurchaseHistory = game:GetService("DataStoreService"):GetDataStore("PurchaseHistory")
print("online")
MarketplaceService.ProcessReceipt =  function(receiptInfo) 
    print("somthing has spawned")
    local playerProductKey = receiptInfo.PlayerId .. ":" .. receiptInfo.ProductId
    if PurchaseHistory:GetAsync(playerProductKey) then
        return Enum.ProductPurchaseDecision.PurchaseGranted
    end
    for i, player in ipairs(game.Players:GetPlayers()) do
        if player.userId == receiptInfo.PlayerId then
            print(receiptInfo.ProductId)
            if receiptInfo.ProductId == character1 then
                print("1 wurks")
                player.skins[player.PlayerGui.GUI.main_menu.character_select.buy_skins.skin1.Value].Value = 1           
            elseif receiptInfo.ProductId == character2 then
                print("hey u should haz it")
                player.skins[player.PlayerGui.GUI.main_menu.character_select.buy_skins.skin2.Value].Value = 1
            elseif receiptInfo.ProductId == character3 then
                print("3 werks")
                player.skins[player.PlayerGui.GUI.main_menu.character_select.buy_skins.skin3.Value].Value = 1
            elseif receiptInfo.ProductId == slotid then      
                player.data.slots.Value = player.data.slots.Value + 1
            elseif receiptInfo.ProductId == subs1250 then      
                player.leaderstats.Subscribers.Value = player.leaderstats.Subscribers.Value + 1250
            elseif receiptInfo.ProductId == subs100 then      
                player.leaderstats.Subscribers.Value = player.leaderstats.Subscribers.Value + 100
            elseif receiptInfo.ProductId == views25000 then
                player.leaderstats.Views.Value = player.leaderstats.Views.Value + 25000
            elseif receiptInfo.ProductId == views5000 then
                player.leaderstats.Views.Value = player.leaderstats.Views.Value + 5000
            else
                print("idk fam")

            end
        end 
    end
    PurchaseHistory:SetAsync(playerProductKey, true)    
    return Enum.ProductPurchaseDecision.PurchaseGranted     
end