Issue Summary

Slots on my booking page are appearing available when not actually available.

Steps to Reproduce

April seems to have available slots on the booking page

In my Google Calendar, this period is definitely "Busy"

And on attempting to book one of the apparently available slots, this error arises:

Technical details

• I have experimented with non-all day events. They don't seem to be working either.
• I have triple checked my Calendar connection settings. The correct calendar is being checked for conflicts.
• I have triple checked my Availability Hours settings, see below: