Expedia has a bug in their system which causes some bookings not to be delivered.
These bookings go to "Fallback" meaning they are delivered directly to the property instead to Beds24. If this happens an email is sent to the property informing them the Channel Manager did not pick it up.
Expedia customer support can not see there is an issue with the booking delivery as this is a deeper failure than they have visibility in.
Expedia technical support confirmed to us that the issue is at their end and not with Beds24 and they are trying to find a solution.
If you receive such a message : Go to SETTINGS > CHANNEL MANAGER > EXPEDIA and click on "Import EXISTING BOOKINGS" button to import the booking. If this does not work please start a support ticket with the Expedia booking number included.