Troubleshooting booking page errors

May 15, 2026

What you’ll need:

  • Available on the Pro plan and 14-day trial.
  • Admin access in Kommo.

Keep in mind:

  • Bookings are available only if at least one booking type and time slot are configured.
  • Available time slots depend on configured working hours and specialist availability.
  • The booking page becomes unavailable if no booking types are configured.
  • Disabled booking links can still be opened, but new bookings cannot be created.
  • Changes made to booking settings during the booking process may affect booking confirmation.
  • Clients do not receive automatic notifications after booking unless they are configured in the booking settings.

 What are booking page errors?

If clients can’t create bookings or encounter errors during the booking process, the issue may be related to booking availability, scheduling settings, or changes made during the booking process.

Below are the most common booking page errors, what they mean, and how to fix them:

  • Booking page unavailable
  • No available time slots for the selected date
  • Selected time slot unavailable
  • Selected specialist unavailable
  • Selected service unavailable
  • Booking confirmation failed
  • Booking notifications not sent

 Booking page unavailable

If the booking page displays the following message: “Booking is unavailable. Please try again later”, it means that the booking page cannot be accessed.

This may happen if:

  • The booking link is invalid or no longer exists
  • The booking link is disabled
  • No booking types are configured

To fix this issue:

  1. Go to Calendar → Booking links.
  2. Make sure the Enable booking toggle is activated.
  3. Verify that at least one booking type is configured.

 No available time slots for the selected date

If clients can’t select a time slot, it means that no available booking slots exist for the selected date.

This may happen if:

  • Working hours are not configured
  • Booking settings restrict availability
  • All available slots are already booked
  • The selected specialist is unavailable

If no time slots are available for the selected date, the booking page displays a message indicating that there are no free time slots and suggests the next available date.

To fix this issue:

  1. Check your booking availability settings.
  2. Verify configured working hours.
  3. Confirm that the selected specialist is available.
  4. Review existing bookings and unavailable dates.

 Selected time slot unavailable

If the booking page displays the following message: “This time slot is no longer available”, it means that the selected slot became unavailable before the booking was confirmed.

This may happen if:

  • Another booking was created for the same slot
  • Booking availability changed during the booking process

In this case, clients should click Select another time and choose a different available time slot to continue booking.

 Selected specialist unavailable

If the booking page displays the following message: “This specialist is no longer available”, it means that the selected specialist became unavailable during the booking process.

To continue booking, clients should click Select another specialist and choose a different available specialist.

 Selected service unavailable

If the booking page displays the following message: “This service is no longer available”, it means that the selected service became unavailable during the booking process.

To continue booking, clients should click Select another service. They’ll be redirected to the service list, where they can choose a different available service.

 Booking confirmation failed

If the booking cannot be completed during confirmation, it means that booking availability changed while the client was completing the booking form.

This may happen if:

  • Booking settings were updated
  • The selected service or specialist became unavailable
  • The selected time slot was booked by another client

To fix this issue, clients should return to the booking page, choose another available service, specialist, or time slot, and complete the booking again.

 Booking notifications not sent

By default, booking confirmations and reminders are not sent automatically after a booking is created.

To send notifications:

  1. In the Calendar section, go to Booking settings → Notifications.
  2. Configure a notification bot in the Bots section.

To learn more about how to set up a notification bot, check our article.

If the issue persists after troubleshooting, contact our support team for additional assistance.

Need more help setting up or troubleshooting? Contact us by sending an email to support@kommo.com or write to us via WhatsApp. You can also hire a Kommo partner to do all the hard work for you.

Not a user yet? Sign up for our free 14-day trial or book a free live demo to see it in action!

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