When an additional fee is synced to a channel as a certain fee type in Guesty, it does not necessarily mean the same fee type is available in the booking channel. You can view the way fees are mapped from Guesty to booking channels here.
When we receive the final invoice from the booking channel, we will display the fee type as it was booked in the relevant channel and the internal name you defined for the fee type in your additional fee settings.
For example, the "Damage Waiver" additional fee is synced to Airbnb as a management fee. When we receive the invoice from Airbnb, they will send us a management fee, and we will add the internal name you defined in your fee settings for management fee. Therefore, the fee on the invoice will not say "Damage Waiver."