I think the issue with Ticket Master is that when tickets for a seat get taken off a certain session, it still shows as available for the "All Session" which is why it shows tickets as available, even if they aren't. Idk if it's accurate but I clicked on tickets in section 105 Row Q and they showed available but then stated "These tickets are no longer available" for All Session but I looked at Session 2 and the tickets weren't available there.