There are several possible reasons why you may be unable to make a reservation:

・No seats are available.
・On a bus with four seats per row, the only remaining seat may be next to a passenger of a different gender.
・The booking deadline has passed.
→ If the same bus service no longer appears in the search results when you search again, there are no seats available for booking or the booking deadline has passed. Please select another bus service.

・The system may be undergoing scheduled maintenance:
　JR Bus: 1:00–5:00 a.m.
　Services with a service code beginning with “Z”: 2:00–5:00 a.m.

・An error may have occurred during the booking or payment process:
　・3D Secure authentication was not completed successfully.
　・Your PayPay balance was insufficient.
　・The payment screen was closed or you navigated to another page before the payment was completed.

Before making another reservation, please be sure to check your reservation history on My Page.
Please confirm that your reservation was not completed before making a new reservation.

■ My Page Login
https://www.kosokubus.com/_en/?page=login