Can someone help with an error with my credits gui showing a different gui?

I am currently working on a game with others and I've made a script so that if you are a developer it shows you a credits GUI if not it comes up with screen that says you are not dev here is the code

local credg = script.Parent.Credg
local credits = script.Parent.Credits
local devs = {"Txeer", "gwbrewer"}

for i, c in pairs(devs) do
            if game.Players.LocalPlayer.Name == c then
            credg.Position = UDim2.new(0,0,0,0)
            wait(3)
            credg.Position = UDim2.new(-1,0,0,0)
            credits.Position = UDim2.new(0,0,0,0)
            wait(4)
            credits.continue.Position = UDim2.new(0.253, 0, 0.822, 0)
            else
            script.Parent.Screen.Position = UDim2.new(0,0,0,0)
        end
end

credits.continue.MouseButton1Click:Connect(function()
    credits.Position = UDim2.new(-1,0,0,0)
    end)

any help?