When I fire the server my value changes somehow? How do I fix that?

I am making a hotel system and when I try to fire the server with a player, it sends the right player value but the other script prints out a different one. So it sent the name "dyslexia1" but the script got it as "poppeyhead" Any way to fix? Also, FE is on. Starter Gui Script:

script.Parent.FocusLost:connect(function(enterPressed)
	if enterPressed then
		local count = 0
		local plr = nil
		for i,v in next, game.Players:GetChildren() do
			if string.len(v.Name) >= string.len(script.Parent.Text) then
				if string.lower(script.Parent.Text) == string.lower(string.sub(v.Name,0,string.len(script.Parent.Text))) then
					count = count+1
					plr = v
					print(v.Name)
					
				end
			end
		end
		if count == 1 and game.Players.LocalPlayer.Name ~= plr.Name then
					script.Parent.Text = "Name :)"
					
					local giver= game.Players.LocalPlayer
game.ReplicatedStorage.RoomSystem.Events.CheckIn:FireServer(plr) 
print(plr.Name)
					script.Parent.Parent.Parent.Waiting.Visible=true
					script.Parent.Parent.Visible=false
					wait (1)
					script.Parent.Parent.Parent.Parent:Destroy()
					end
	end
end)

SSS Script:

game.ReplicatedStorage.RoomSystem.Events.CheckIn.OnServerEvent:connect(function(plr)
	pcall(function()
		print(plr.Name)
local target= plr
local rooms= game.ReplicatedStorage.RoomSystem.Rooms
local keys= game.ReplicatedStorage.RoomSystem.Keys
local room1= rooms:FindFirstChild("Room 1")
local room2= rooms:FindFirstChild("Room 2")
local room3= rooms:FindFirstChild("Room 3")
local room4= rooms:FindFirstChild("Room 4")
local room5= rooms:FindFirstChild("Room 5")
local key1= keys:FindFirstChild("Room 1")
local key2= keys:FindFirstChild("Room 2")
local key3= keys:FindFirstChild("Room 3")
local key4= keys:FindFirstChild("Room 4")
local key5= keys:FindFirstChild("Room 5")
print("HI")

if target ~= nil then
	print("Target not nil")
	if target.CheckOut.Value==true then
		print("running")
		target.CheckOut.Value= false
		target.CheckIn.Value= true
		if room1.Value== false then
			room1.Value= true
			target.Room.Value= 1
		
			
		local key= key1:Clone()
		key.Parent= plr.Backpack
			
			elseif room2.Value==false then
			room2.Value= true
			target.Room.Value= 2
				local key= key2:Clone()
		key.Parent= plr.Backpack
		

			
				elseif room3.Value==false then
				room3.Value= true
				target.Room.Value= 3
				
			local key= key3:Clone()
		key.Parent= plr.Backpack
				
					elseif room4.Value==false then
					room4.Value= true
					target.Room.Value= 4
						local key= key4:Clone()
		key.Parent= plr.Backpack
					
	
					
						elseif room5.Value==false then
						room5.Value= true
						target.Room.Value= 5
						
			local key= key5:Clone()
		key.Parent= plr.Backpack
					
		end
		
		
	end
end
end)
end)