I’ve heard of them, have not used them. I believe they are sponsored by HomeAway, but I could be wrong.
How about this:
You agree to let them represent you on a trial basis, but you keep your own listings as they are (so you do not lose your status). Any reservations they get they earn their commission. Anything you get on your own they do not earn, or earn less.
I agree, going forward, re-upping with HA/VRBO is iffy at best. They seem to be playing catch up with Airbnb, but not very well…