The same here. We´ve received numerous booking with Low Demand Promotion in it. Airbnb support is completely incompetent resolving the issue blaming Channel Manager for that. What an intelligent error on Channel Manager´s side giving his software error name "Low Demand Promotion", right?
In our case it´s 10% off which is not that bad but we received over 20 bookings like that and keep receiving them! In some cases we had active promotion of 15% so this was 25% total!!
Obviously Airbnb created a promotion, and either they don´t have it under control, or they´re doing on purpose so they get more flexibly priced reservations without host agreeing to smart pricing.
We´ve also talked to numerous people and they recommended to turn off instant booking and disconnect channel manager, which is absolutely not a solution for us as we would eventually be getting less reservations and views (due to instant booking turned off) and overbookings (that´s what channel manager prevents, quite important).
If any of you guys found solution for the issue it would be very appreciated.
Thank you