After entering your calendar file URL into myallocator, the screen refreshes and the link was not saved.
Our system performs a verification step to ensure that the calendar file URL is correct. If it's not correct, our system will not save it.
If you enter a Homeaway URL into the VRBO setup, our system will discard that URL because it did not start with https://admin.vrbo.com/icalendar.
When setting up your calendar channel, be sure to use the exact/correct channel URL (not an affiliate).
So for VRBO, you must enter the VRBO URL - you cannot enter the Homeaway URL (even though they are affiliated).