Why does this give the trail to everyone?

local Trail= game.ServerStorage["Rainbow Trail"]

local passIDs = {
    971425430
}

function playerHasPass(plr)
    for _,id in pairs(passIDs) do
        if game:GetService("GamePassService"):PlayerHasPass(plr, id) then
            return true
        end
    end
    return false
end


game.Players.PlayerAdded:Connect(function(plr)
plr.CharacterAdded:Connect(function(char) 
	local plrTrail = Trail:Clone()
        plrTrail.Parent = char.HumanoidRootPart
        if char:FindFirstChild("UpperTorso") then
            plrTrail.Attachment0 = char.Head.FaceFrontAttachment
            plrTrail.Attachment1 = char.UpperTorso.WaistRigAttachment
        else
            plrTrail.Attachment0 = char.Head.FaceFrontAttachment
            plrTrail.Attachment1 = char.Torso.WaistBackAttachment
        end
    end)
end)

Maybe try this? Put this in a LocalScript:

function Close(player)
   if game:GetService("MarketplaceService"):UserOwnsGamePassASync(player, 971425430) then
--input code here
end

Hope it works.