Why Do Local Scripts In GUI Not Change When You Join?

Hiya, so I've been on heavy work for a game. There is a timer at the top that has this script inside of it:

local seconds = script.Parent.Parent.Time
local level = game.Workspace.Values.level.Value
script.Parent.Text = seconds.Value
while true do
if game.Workspace.Values.re.Value == true then
	local level = game.Workspace.Values.level.Value
	for i = 1,seconds.Value do
	script.Parent.Visible = true
 	wait(1)
 	seconds.Value = seconds.Value - 1
 	script.Parent.Text ="The EF"..level.." will die off in "..seconds.value.." seconds."
	end
elseif game.Workspace.Values.re.Value == false then
	script.Parent.Text = ""
	seconds.Value = 149
	wait()
end
end

(re is the value that tells the script that the timer needs to be activated)

I was wondering if there was anyway for this GUI to appear regardless if someone joins in the middle of it counting down? Thanks!