If you're having trouble activating the new Booking Calendar Pro version after updating from the old paid version using the provided installation instruction, please follow these four troubleshooting steps: 1. Deactivate the old paid version of Booking Calendar. 2. Delete … Continue reading
Blog Archives
Issue with Exporting Bookings from personal websites to Booking.com
Issue with Exporting Bookings from Personal Websites to Booking.com: Since March 2025, Booking.com no longer supports exporting bookings from personal or customer websites via .ics feeds. When you attempt to paste the .ics feed URL into the sync page on … Continue reading
Resolving the “This iCal URL is invalid” Error when Exporting Bookings to Airbnb
If you see an error like "This iCal URL is invalid" while exporting bookings from your Booking Calendar to Airbnb (or other services), even though online validators (like icalvalidator.com or icalendar.org) show that the .ics feed is valid, the issue … Continue reading
Export bookings to CSV generate 404 error.
If during export bookings to CSV at the WP Booking Calendar > Booking Listing page you have 404 error, then check these steps: Go to: WordPress Settings > Permalink page. Please be sure that you set the "Permalink structure" option … Continue reading
Setup Wizard on step 4 keeps going to a blank page
Such issue can be because of some rules in your Wordfence Firewall. Go to Wordfence - Tools - Live traffic. Find the line(s) with the error: /wp-admin/admin-ajax.php 403, go over one line with the mouse and check "add parameters to … Continue reading
WP Rocket Compatibility
If you use WP Rocket plugin, and you have issue of not showing calendar, but instead of that see the "Calendar loading...". Here's how to resolve these issues: Update Your Booking Calendar to version 10.1.3 or newer Ensure you have … Continue reading
Divi Theme Conflict. Calendar Loading issue.
If you use the Divi theme and have issue of not showing calendar, but instead of that see the "Calendar loading..." message then follow these steps to fix this conflict. Update Your Booking Calendar to version 10.1.3 or newer Ensure … Continue reading
WP Optimize plugin generate conflict error: Calendar is loading…
If you use WP Optimize plugin, and you have issue of not showing calendar, but instead of that see the "Calendar loading...". Probably in the Developer console you will see several lines such as this: == WPBC VARS 10.1.2 [free] … Continue reading
Resolving 404 Error of Export Bookings in .ICS feed
If during export bookings to .ics feed at the WP Booking Calendar > Settings > Sync > "Export - .ics" page you have 404 error, then check these steps: Go to: WordPress Settings > Permalink page. Please be sure that … Continue reading
Calendar is not loading
If you encounter the message "Calendar is loading" instead of seeing the calendar on your page, and you notice one of the following JavaScript errors or warnings in your browser console: Uncaught ReferenceError: visible_booking_id_on_page is not defined or Uncaught ReferenceError: … Continue reading