Help with my script and the new gamepass system. Can someone please help me?

I've tried fixing the script, but it just doesn't work for me. Can someone please help me with the script. Here's the script:

local Gamepasses = {


    [732884508] = { 
        1000000
    },


    [732884250] = { 
        "H:30", 
        "W:10", 
    },


}

local Items = { 
    [54529181] = {
        1000
    },


    [54529200] = {
        game.ServerStorage.Minigun
    },


    [54529215] = {
        "W:25"
    },

    [54529220] = {
        "H:25"
    }
}




local MarketplaceService = game:GetService("MarketplaceService")

function GetName(ID)
    if type(ID) ~= "number" then
        return
    end
    local sets = game:service("InsertService"):GetUserSets(ID)
    for k, v in next, sets do
        if v.Name == "My Models" then
            return v.CreatorName
        end
    end
end

local function Sep(table,plr)
    for i,v in pairs(table) do
        if type(v)=="userdata" then
            v:Clone().Parent = plr.Backpack
        elseif type(v)=="number" then
            game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value = game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value + tonumber(v)
        else
            if v:sub(0,2) == "W:" then
                plr.Character.Humanoid.WalkSpeed = plr.Character.Humanoid.WalkSpeed + tonumber(v:sub(3))
            else
                plr.Character.Humanoid.MaxHealth = plr.Character.Humanoid.MaxHealth + tonumber(v:sub(3))
                plr.Character.Humanoid.Health = plr.Character.Humanoid.Health
            end
        end
    end
end

local function SepQ(table,plr)
    for i,v in pairs(table) do
        if type(v)=="userdata" then
            v:Clone().Parent = plr.Backpack
        elseif type(v)=="number" then
            return
        else
            if v:sub(0,2) == "W:" then
                plr.Character.Humanoid.WalkSpeed = plr.Character.Humanoid.WalkSpeed + tonumber(v:sub(3))
            else
                plr.Character.Humanoid.MaxHealth = plr.Character.Humanoid.MaxHealth + tonumber(v:sub(3))
                plr.Character.Humanoid.Health = plr.Character.Humanoid.Health
            end
        end
    end
end

MarketplaceService.ProcessReceipt = function(receiptInfo)
    print(receiptInfo.ProductId)
    if Items[receiptInfo.ProductId] then
        if type(GetName(receiptInfo.PlayerId)) == "string" then
            wait()
            local p5 = game.Players:FindFirstChild(GetName(receiptInfo.PlayerId))
            wait()
            Sep(Items[receiptInfo.ProductId],p5)
        end
    end
    return Enum.ProductPurchaseDecision.PurchaseGranted     
end

game.Players.PlayerAdded:connect(function(p)
    if p~=nil then
        for i,v in pairs(Gamepasses) do
            if MarketplaceService:PlayerOwnsAsset(p,i) then
                Sep(v,p)
            end
        end
        wait(0.5)
        p.CharacterAdded:connect(function(c)
            for i,v in pairs(Gamepasses) do
                if MarketplaceService:PlayerOwnsAsset(p,i) then
                    SepQ(v,p)
                end
            end
        end)
    end
end)

Note: W is walkspeed and H is health.