Egg popup that works until i sell the eggs (Simulator game) ?

I made it so that it pops up when you pick up a egg or if you get coins. When i pick up the eggs the popup works fine, but then when i go and sell my eggs to coins and i go back to the eggs and try to pick them up the popup doesn't show on screen. Then randomly it starts working when you pickup af lot of eggs.

Gif that show how it looks like: https://gyazo.com/ade66de5e3beb2264e2c392b428cd326

The script for the popup

wait()
local player = game.Players.LocalPlayer
local leaderstats = player:WaitForChild("leaderstats")
if leaderstats then
	local Eggs = leaderstats:FindFirstChild("Eggs")
	if Eggs then
		local lastvalue = Eggs.Value
		Eggs.Changed:connect(function()
			if Eggs.Value >= lastvalue then
				local NewUi = script.TextLabel:Clone()
				NewUi.Parent = script.Parent
				NewUi.Visible = true
				NewUi.Text = "????"..Eggs.Value - lastvalue
				NewUi.Position = UDim2.new(0.477,0,0.460,0)
				NewUi:TweenPosition(UDim2.new(0.066,0,0.405,0),"Out",0.2,true)
				wait(0.95)
				NewUi:Destroy()
				lastvalue = Eggs.Value
			end
		end)
	end
end