We are currently experiencing issues with the Calendar Sync, causing 24 AMs to show zero bookable slots on almost every scheduled day and impacting external bookings. The blast radius is expected to grow, affecting national-holiday calendars and Classroom training calendars. The root cause has been identified as a recent change in the GCal multi-calendar busy-time sync. Our team is working on a fix to address the issue and restore normal functionality. We apologize for any inconvenience this may cause and appreciate your patience as we work to resolve this issue.