First, make sure that the check-in list is attached to all of the relevant ticket types.
If they are and if you have our Invoicing feature enabled, any unpaid orders won't show in your check-in list by default if you have the Hide unpaid box checked under the List of attendees section. Uncheck this to reveal all attendees.
If this doesn't solve the problem, please get in touch.
Still need help? Search our FAQs for instant answers. You can also leave a message for our support team by email or in-app, and we'll get back to you by the next working day.