Weird bug with region3, just stopped working?

So basically, what happens is, the script runs and gets to all check points, but rejoin3 doesn’t detect any touching from teh humanoid; it worked 2 minutes before.
script:

local Rep = game:GetService("ReplicatedStorage")

local Event = Rep:WaitForChild("KOTH")
wait(1)
while true do
	local koth = workspace:WaitForChild("KOTH", 5)
	if not koth then return end
	local hitbox = koth:WaitForChild("hitbox", 5)
	if not hitbox then return end
	local kings = table.create(game.Players.MaxPlayers)
	local count = 60
	while count > 0 do
		count = count - wait(1)
		Event:FireAllClients("COUNTDOWN", count)
		local min = hitbox.Position - (0.5 * hitbox.Size)
		local max = hitbox.Position + (0.5 * hitbox.Size)
		local region = Region3.new(min, max)
		local parts = workspace:FindPartsInRegion3(region, koth, 30) --  find players inside
		local markedoff = {}
		for i, v in pairs(parts) do
			print(v.Name)
			if not markedoff[v.Parent.Name] and v.Parent:IsA("Model") and v.Parent:FindFirstChild("Humanoid") then
				print(v.Name)
				local head = v.Parent:FindFirstChild("Head")
				if head then
					local gui = head:FindFirstChild("HeadGui")
					if gui then
						local label = gui.KOTH
						label.Visible = true
						local val = tonumber(label.Text)+1
						label.Text = tostring(val)
						kings[v.Parent.Name] = val
						markedoff[v.Parent.Name] = true
					end
				end
			end
		end
		if count < 1 then
			wait(count)
			break
		end
	end
	local won = nil
	local highest = 0
	for i, v in pairs(game.Players:GetChildren()) do
		if kings[v.Name] then
			local head = v.Character:FindFirstChild("Head")
			if head then
				local gui = head:FindFirstChild("HeadGui")
				if gui then
					gui.KOTH.Visible = false
				end
			end
			if kings[v.Name] > highest then
				highest = kings[v.Name]
				won = v
			end
		end
	end
	print(won)
	if won ~= nil then
		Event:FireAllClients("END", won.Name)
		print(won.Name, " WON THE MATCH")
	end
	wait(30)
end

Thanks.

One potential reason it’s not working is you did

local parts = workspace:FindPartsInRegion3(region, koth, 30)

The 30 sets a maximum of 30 instances in the parts table, if it’s a detailed map it could reach that limit from nearby parts alone.

Well the problem was that I forgot to anchor the part XD