I have purchased a number of bundles that come with one day XP ticket.  I start using it.  I have 6 one days XP tickets left in my inbox which has over 90 days life.  On 6 September morning when I log in they are still there.  How every when I login in the evening, they were gone together with other shop-items.  I raised the ticket immediately and I got a standard response.  I haven't got response from my ticket yet.