@Wende2
Well, first, we're lucky that we're located in a high demand tourist destination, and particularly at this time of year, bookings are all but guaranteed.
But Airbnb is also wildly popular over here, and despite VRBO (homeaway/expedia) having bought up all the smaller regional booking platforms (and therefore listing on VRBO puts you on all those platforms), VRBO is hardly a household name here, and not anywhere near the "go to" that Airbnb has built.
Surely the popularity varies by region, but in our experience in this region, VRBO is like a nonexistent platform. Not only a fraction of the market reach, but I've never ever received any reply to any question or support ticket I've initiated with VRBO. It's as if they don't exist.
Now, that may sound alarming or a gross exaggeration about VRBO, but in some ways it could be regarded as a plus when compared to Airbnb, because there's always a risk in getting Airbnb involved in any host-guest issues. Yes, at least they respond, but they are often rather disconnected with reality, and can turn it around to bite you either directly or indirectly.
My experience leads me to adopt the view that no matter what platforms you use, you're really on your own, and so you should deal with issues on your own whenever possible. Otherwise, you will likely be sorely disappointed, or even damaged by getting the platform involved.
Use them for what they can bring to the party (e.g., bookings). Keep a distance for everything else. If they don't deliver what you need, then move on. If they're bringing decent bookings, then use them for that, but watch your back. You can't really depend on any of them.
Now, I've read a lot about people not getting bookings since the Airbnb summer rollout. Again, we're lucky not to have been affected by this. And frankly, I've seen no difference in our search results. We still show up on page 1 for searches that are appropriate for the type of listing (when we have availability).
But that may be due to the high demand in our area combined with Airbnb's popularity. In my case, the evidence points me to keep with the devil I know. I'm definitely uncomfortable with dependence on Airbnb, but the alternatives aren't any ray of sunshine either. In fact, in the case of VRBO, it's just an unproductive additional burden. So, I dropped them.
Good luck. Hope you can get some results with VRBO!