How to announce when a certain player joined the game?

I'm trying to find a script where is a certain user was to join the server, there will be a pop up on the screen saying "User joined the game!"

For some reason, the script isn't working though.

I found the script on an outdated youtube video and I'm trying to get it to work, here's what I have.

function OnPlayerEntered(player)
	if player.userId == game.CreatorId then --for the game owner, might remove it
		local msg = Instance.new("Message")
		msg.Parent = game.Workspace
		msg.Text = "The creator has joined the server!"
		wait(2)
		msg:remove()
	elseif player.Name == "Aprilsaurus" then --what I'm trying to work on
		local msg = Instance.new("Message")
		msg.Parent = game.Workspace
		msg.Text = "The Dev has joined this server!" --the text
		wait(10)
		msg:remove()
	end
end

game.Players.ChildAdded:connect(OnPlayerEntered)

I don't see any errors in the output so I'm not sure why it's not working, any help is appreciated.