Client/Server side problems?

Okay so basically, i have a nametag which shows a player name and level. I have this to update every couple' seconds and works perfectly. However, i wanted to enable filtering, so i wanted to work around the local script problem. It works, however you cannot see the other player's nametag, only your own tag which is weird.

Here is the server side script:

game.Players.PlayerAdded:connect(function(player)
	player:WaitForChild("Backpack")
	local event = Instance.new("RemoteEvent")
	event.Parent = player.PlayerGui
	event.Name = "LvlHeadEvent"
	
	local function Fire()
		event:FireClient(player)
		print("event sent")
	end
	
	while wait(1.5) do
		Fire()
	end
	
end)

Here is the Nametage Billboard GUI (client side, local script)

local player = script.Parent.Parent
function onPlayerUpdate()
	wait(0.1)
        if (player.Character:FindFirstChild('FakeHead')~=nil) then
        	if (player.Character.Head:FindFirstChild("BillboardGui")==nil) then
  			local gui=Instance.new("BillboardGui")
       	 	gui.Parent=player.Character.Head
        	gui.Adornee=player.Character.Head
        	gui.Size=UDim2.new(20,0,1,0)
        	gui.StudsOffset=Vector3.new(0,2,0)
      		local text1=Instance.new("TextLabel")
        	text1.Text = ("Loading")
        	text1.FontSize = "Size8"
			text1.TextColor3 = Color3.new(255,255, 255)
        	text1.TextStrokeColor3 = Color3.new(0, 0, 0)
			text1.TextScaled = true
        	text1.TextStrokeTransparency = 0
        	text1.Size=UDim2.new(1,0,1,0)
        	text1.Position=UDim2.new(0,0,-0.5,0)
        	text1.BackgroundTransparency = 1
        	text1.Parent=gui 
				else
        	player.Character.Head.BillboardGui.TextLabel.Text= (player.Name..", Level: "..player.leaderstats.Lvl.Value)
      	end 
	end 
end

local event = script.Parent:WaitForChild("LvlHeadEvent")
 
event.OnClientEvent:connect(function()
	onPlayerUpdate()
end)

thanks for any help if youre good with this stuff haha, ~bubs