Script not recognizing rank inside group?

So, I have a script that is meant to detect if you're the owner of the group which ID you put inside the textBox, but it keeps returning me as NOT the owner. My Username: TheHospitalDev Testing Group: http://www.roblox.com/My/Groups.aspx?gid=2732066

Script:

local create = script.Parent
local frame = script.Parent.Parent
local id = script.Parent.Parent.groupID.Text
local plr = game.Players.LocalPlayer

local ap = require(game.Workspace.TrelloAPI)

create.MouseButton1Click:connect(function()   
    if tonumber(id) and plr:GetRankInGroup(tonumber(id)) == 255 then --Line 12
        wait()
        local group = game:GetService("GroupService"):GetGroupInfoAsync(tonumber(id.Text))
        local BoardID = ap:GetBoardID("Appalachian Security Contract Application")
        local ListID = ap:GetListID("Applied",BoardID)
        local CardID = ap:AddCard("[NS] " .. group.Name, game.Players.LocalPlayer.Name, id, ListID)
        print("He's the owner!!!!")
        script.Parent.Parent.create.Visible = false
        wait(3)
    game.Players.LocalPlayer:Kick("Thank you for choosing Appalachian Private Security Company, we hope you choose us again! -APSC")

    else
        print("He's NOT the owner!!!!")
        script.Parent.Parent.Warn.Visible = true
        script.Parent.Parent.create.Visible = false
        wait(5)
        script.Parent.Parent.Warn.Visible = false
        script.Parent.Parent.create.Visible = true
    end
end)

If you need the GUI to test it, please post in comments!