Why isn't this debounce working with my owner only door script?

So I made an owner only door that only opens if I (represented by my UserID) walks through it (and also if someone else i know walks through it they explode). It works fine, but for some reason it only works once. I'm not sure if I'm just not waiting long enough for the door to start back at the beginning, but yeah it only works once. What's did I do wrong? (I just want it able so that the door cant be spammed by using a debounce.)

debounce = false
script.parent.Touched:connect(function(hit)
    if debounce == true then return end
    debounce = true
    if hit.Parent:FindFirstChildOfClass("Humanoid") then -- Checks if it has a humanoid
    local plr = game.Players:GetPlayerFromCharacter(hit.Parent) -- Gets the player associated with the character
    if plr then -- Make sures it is actually there
        if plr.UserId == 34310670 then -- Makes sure it has the correct userid
           local m = Instance.new("Message",game.Workspace)
m.Text = 'LilC has entered the safe house'
wait(3)
m:Destroy()
script.Parent.Transparency = .5 
script.Parent.CanCollide = false
wait(3)
script.Parent.Transparency = 0
script.Parent.CanCollide = true
    elseif plr.UserId == 28066664  then
         plr.Character:MoveTo(Vector3.new(21, 66.9, -96.5))
        local bomb = Instance.new("Explosion",game.Workspace)
bomb.Position = plr.Character.Torso.Position
    end

        end
    end
    end)