I've got a tool that doesn't work, can anyone help? (Tool mechanism in description)

Hello, I've ran into a problem when using a tool called 'LabelTool'.

The Label Tool is a flying text tool generator, which places BillboardGui Text Labels on parts, which can appear colourful, the tool is usually used in role playing games, like colony building games. The options of the colors, (textColor and outlineColor) can be changed by navigating to the left side and clicking a blank button, and clicking on a color, it will also preview how it will look if you change the colors, you may also change the text aswell. When done with all those, you can click on a part to snap the text ontop of it.

The tool itself is a HopperBin Class tool, before the 'FilteringUpdate' the tool worked properly, I've seen something on other questions about HopperBin is deprecated.

Look at the tool's instances here. Look at the tool's properties here.

OutlineColorPicker and TextColorPicker contains a bunch of colors, a button decal and a script. The scripts are all down below if you want to read them. I don't mind copying this as it's free-to-use.

Local Script contains:

wait()
active = false
local m1
local m2
local label = script.Parent.TextGUI
local toolGui = script.Parent.LabelTool
local play = script.Parent.Parent.Parent
local box

function click(targ)
	if targ ~= nil then
	if targ.Locked == false then
		if not targ:FindFirstChild("TextGUI") then
			local gui = label:Clone()
			gui.label.Text = script.Parent.title.Value
			gui.label.TextColor3 = script.Parent.tc.Value
			gui.label.TextStrokeColor3 = script.Parent.oc.Value
			gui.Parent = targ
		else
			local gui = targ:FindFirstChild("TextGUI")
			gui.label.Text = script.Parent.title.Value
			gui.label.TextColor3 = script.Parent.tc.Value
			gui.label.TextStrokeColor3 = script.Parent.oc.Value
		end
	end
	end
end

function hover(targ)
	if not box then
		box = Instance.new("SelectionBox")
		box.Color = BrickColor.new("Deep blue")
		box.Transparency = 0.5
		box.Parent = script.Parent
	end
	if targ ~= nil then
	if targ.Locked == false then
		box.Adornee = targ
		box.Parent = game.Workspace
	else
		box.Adornee = nil
		box.Parent = script.Parent
	end
	end
end

script.Parent.Selected:connect(function(m)
	active = true
	toolGui.Parent = play.PlayerGui
	m1 = play:GetMouse().Button1Down:connect(function() click(play:GetMouse().Target) end)
	m2 = play:GetMouse().Move:connect(function() hover(play:GetMouse().Target) end)
end)

script.Parent.Deselected:connect(function()
	active = true
	toolGui.Parent = script.Parent
	m1:disconnect()
	m2:disconnect()
end)

OutlineLabel textLabel contains this script:

local r = script.Parent.Parent.tc
local g = script.Parent.Parent.oc
local bin = script.Parent.Parent.bin.Value

function change()
	script.Parent.TextStrokeColor3 = g.Value
	bin.oc.Value = g.Value
end

g.Changed:connect(change)

function change2()
	script.Parent.TextColor3 = r.Value
	script.Parent.Parent.colorLabel.TextColor3 = r.Value
	bin.tc.Value = r.Value
end

r.Changed:connect(change2)

script.Parent.Parent.textBox.Changed:connect(function() 
	bin.txt.Value = script.Parent.Parent.textBox.Text
end)

TextColorPicker has a script containing:

local m1
local m2
function AddButton(button)
	button.MouseButton1Down:connect(function()
	script.Parent.Parent.tc.Value = button.BackgroundColor3
	end)
end

open = false
active = false
b = 10 --Speed the window opens/closes (Must be a positive number) 
script.Parent.Button.MouseButton1Down:connect(function()
if not active then active = true
	if open then
	open = false
		for i = 176,16,-b do
		script.Parent.Size = UDim2.new(0,96,0,i)
		wait()
		end
	else
	open = true
		for i = 20,180,b do
		script.Parent.Size = UDim2.new(0,160,0,i)
		wait()
		end
	end
active = false
end
end)

local buttons = script.Parent:GetChildren()
for i = 1,#buttons do
	if buttons[i].ClassName == "TextButton" then
	AddButton(buttons[i])
	end
end

OutlineColorPicker has a script, of almost the exact same above.

function AddButton(button)
	button.MouseButton1Down:connect(function()
	script.Parent.Parent.oc.Value = button.BackgroundColor3
	end)
end

open = false
active = false
b = 10 --Speed the window opens/closes (Must be a positive number) 
script.Parent.Button.MouseButton1Down:connect(function()
if not active then active = true
	if open then
	open = false
		for i = 176,16,-b do
		script.Parent.Size = UDim2.new(0,96,0,i)
		wait()
		end
	else
	open = true
		for i = 20,180,b do
		script.Parent.Size = UDim2.new(0,160,0,i)
		wait()
		end
	end
active = false
end
end)

local buttons = script.Parent:GetChildren()
for i = 1,#buttons do
	if buttons[i].ClassName == "TextButton" then
	AddButton(buttons[i])
	end
end