See where it says SEATS? That's FYI only, you can't choose seats in the pop up window that follows. There's NO indication that it's display only.
Try to click a seat to choose it, no error message. No text explaining that this is a display only screen.
Now that you are on the payment screen, you can click SEATS to choose a seat. Nice RED color choice guys. Maybe you should rethink that and make it GREEN?
After clicking the SEATS button on the Payment Page, this "Initializing Seatmap" animation comes up... and never stops... never displays the seats. All you can do is close and continue without choosing a seat.
After making a reservation without being able to choose a seat, you can go in and edit your existing reservation and add a seat. Here, clicking an available seat places the number 1 in a brown circle. Just like the Legend shows. ;-) Nice color choice too for Save & Close. You might want to rethink that and make it Green.