FireClient() isn't working as expected ?

Hello, i'm trying to implement a system where another client can send information to whatever other client that's in the game. And this seems to be not working.

There's 3 Scripts, Server, Local & ModuleScript.

The ModuleScript handles everything.

Here's the ModuleScript :

local module = {}

local RunService = game:GetService("RunService")
local Players = game:GetService("Players")

local sendInformation = script.Parent.Parent.RemoteEvents.SendInformation
local sendToclient = sendInformation.Parent.SendToClient

module.ClientInt = function()
	if RunService:IsClient() then
		
		local player = Players.LocalPlayer
		local inputPlayerName = player.PlayerGui.SendingOnClient.UI.InputPlayerName
		local send = inputPlayerName.Parent.Send
		
		send.MouseButton1Down:Connect(function()
			
			local playerName = inputPlayerName.Text
			
			sendInformation:FireServer(playerName)
			
		end)
		
		sendToclient.OnClientEvent:Connect(function(playerWhoSent)
			
			inputPlayerName.Text = playerWhoSent.Name.." sent you this!"
			
		end)
		
	end
end

module.ServerInt = function()
	if RunService:IsServer() then
		
		sendInformation.OnServerEvent:Connect(function(playerWhoSent, playerWhoRecieves)
			
			if Players:FindFirstChild(playerWhoRecieves) then

				local playerInstance = Players:FindFirstChild(playerWhoRecieves)
				
				sendToclient:FireClient(playerInstance, playerWhoSent)
				
			else
				
				print("That player isn't in the game!")
				
			end
		end)
	end
 end

return module