Script or help for an advanced version of normal in-game nametags?

I'm currently working on a project for a group of mine, I have found an old script of a nametag that has both your ROBLOX name, the main group rank and the name of the division you're in, sadly the script has broken for some reason, any help would be greatly appreciated, such as another script that's working or help to fix the current one.

Group ID's, division names and User ID's have been replaced for the sake of simplicity and for the sake of the members.

Thank you for any kind of help!

``"local GUI = script:WaitForChild("Rank")

local DivisionTags = {
	-- GroupID, GroupName
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
    {GROUPID, "NAMEOFDIVISION}
	
}

local CustomNames = {
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
        {PLAYERID, "CUSTOM NAMETAG"},
        {PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID,  "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"},
	{PLAYERID, "CUSTOM NAMETAG"
	
    }

function ReturnDivision(Player)
	for _,v in pairs(DivisionTags) do
		if Player:IsInGroup(v[1]) then
			return v[2]
		end
	end
end

function ReturnCustomName(Player)
	for _,v in pairs(CustomNames) do
		if Player.UserId == v[1] then
			return {v[2], v[3]}
		end
	end
end

game.Players.PlayerAdded:connect(function(Player)
	Player.CharacterAdded:connect(function(Character)
		spawn(function()
			local GroupName = ReturnDivision(Player)
			if Player.TeamColor == BrickColor.new("Bright red") then
				wait(.8)
				local a = GUI:clone()
				a.Adornee = Character:WaitForChild("Head")
				a.Frame.Name1.Text = Player.Name
				a.Frame.TextLabel.Text = ""
				a.Enabled = true
				a.Frame.Name1.TextColor3 = Player.TeamColor.Color
				a.Parent = Character
			elseif Player.TeamColor == BrickColor.new("Bright green") then
				wait(.8)
				local a = GUI:clone()
				a.Adornee = Character:WaitForChild("Head")
				a.Frame.Name1.Text = Player.Name
				a.Frame.TextLabel.Text = ""
				a.Enabled = true
				a.Frame.Name1.TextColor3 = Player.TeamColor.Color
				a.Parent = Character
			elseif Player.TeamColor == BrickColor.new("Bright violet") then
				wait(.8)
				local a = GUI:clone()
				a.Adornee = Character:WaitForChild("Head")
				a.Frame.Name1.Text = Player.Name
				a.Frame.TextLabel.Text = ""
				a.Enabled = true
				a.Frame.Name1.TextColor3 = Player.TeamColor.Color
				a.Parent = Character
			else
				if GroupName ~= nil then
					local CustomName = ReturnCustomName(Player)
					if CustomName ~= nil then
						wait(.8)
						local a = GUI:clone()
						a.Adornee = Character:WaitForChild("Head")
						a.Frame.Name1.Text = CustomName[1]
						a.Frame.TextLabel.Text = CustomName[2]
						a.Enabled = true
						a.Frame.Name1.TextColor3 = Player.TeamColor.Color
						a.Parent = Character
					else
						wait(.8)
						local a = GUI:clone()
						a.Adornee = Character:WaitForChild("Head")
						a.Frame.Name1.Text = Player.Name
						a.Frame.TextLabel.Text = GroupName .. ", " .. Player:GetRoleInGroup(-emptyforthisquestion-)
						a.Enabled = true
						a.Frame.Name1.TextColor3 = Player.TeamColor.Color
						a.Parent = Character
					end
				end
			end
		end)
	end)
end)"``