Multiple Time Slot Dropdown Not Showing on Reg Form

Hey there, I’d like to show the dropdown time slot selector within the registration form, but it doesn’t seem to pulling in from my GoToWebinar page here: https://register.gotowebinar.com/rt/5719839097499657986

How do I allow my registrants to select the time they will be registering for within the WP GoToWebinar Registration form?

The page I need help with: [log in to see the link]