Text button isn't working?

I've been working on an AFK check thingy for my game so players can't just autoclick all day, and when I test it, the button doesn't work. I've tried MouseButton1Click and MouseButton1Down and neither seem to work. Nothing shows in the output so I think it should work, but I don't know.

Example (The bin thing is a DataStore problem, don't worry about that)

My code

Problem is at lines 21-26

Player = game.Players.LocalPlayer
AFKCheckFrame = script.Parent


while true do
    wait(math.random(10, 15))
    AFKCheckFrame.Visible = true
    local afkchecknum = 0
    local randomafk = math.random(10,20)
    while afkchecknum <= randomafk do
        wait(1)
        local randomx = math.random(0, 312)
        local randomy = math.random(0, 629)

        AFKCheckFrame:TweenPosition(UDim2.new(randomx/1000, 0, randomy/1000, 0), "Out", "Quad", math.random(1, 5))

        afkchecknum = afkchecknum + 1
        AFKCheckFrame.TextLabel.Text = "you better not be afking on this masterpiece of a game. you have ["..randomafk-afkchecknum.."] seconds to click that you're not!"
    end 

    AFKCheckFrame.TextButton.MouseButton1Down:connect(function()
        if afkchecknum <= randomafk then
            AFKCheckFrame.Visible = false
            randomafk = 1000000
        end
    end)    

    if afkchecknum >= randomafk then
        Player:Kick("you have been afk for too long")
    end
    AFKCheckFrame.Visible = false
end