@Eamon-and-Tomás0
Oh dear, why does this not surprise me!
For some really obscure reason Airbnb are going out of their way to make sure hosts are precluded from making what is their rightful and agreed to reward for fulfilling their part of the deal!
You are a superhost so you will have a fast contact option, provided you use the phone that is registered with Airbnb....the one you receive alerts on, get onto them and point out that the rental amount agreed by you and Airbnb for a 6 night stay (which is what occurred) is 12% more than the amount you received.
It won't do you any good because they will give you some double-speak about payouts and payments being automated and not something they have any control over. So at that point tell them to remove any discount offers that may be applicable to your listing!
These calls do get analysed, they are recorded and sooner or later someone in there will realise that this does need to be corrected.....a 6 night stay cannot take place at a 12 night rate.
Bad luck guys but, as I said, doesn't surprise me, in fact I wouldn't have expected anything different from Airbnb!
Cheers......Rob