My model is floating, how do I make it so it doesn't float?

My model is from a required module also uploaded to roblox and this happens https://i.imgur.com/tYDNzlJ.png

Module ID is 5939559857

Main script:

--Without this script the van may not function as intended!
local icecream = script.Main.Icecream
local detector = script.Main.Van.Dispenser.Button.ClickDetector
detector.MouseClick:Connect(function(plr)
    local clone = icecream:Clone()
    clone.Handle.Anchored = false
    clone.Parent = plr.Backpack
end)

MainModule:

local module = {}
local main = function()
    script:WaitForChild("Vanfunctions")
    local dog = "dog"
    script.Vanfunctions.Disabled = false
    script.Vanfunctions.Parent = workspace
end
return main

How the module was required

ServerScript:

wait(2)
local req = require(5939559857)
wait(1)
req()