Hi @XioMara33
My understanding is that the fee has not "jumped" but rather the fee is now included with the hosting charge and together are displayed as a single fee to the guest.
The change that has been made (in process) is to allow the host to see the total price the guest pays.. similar to other organizations.
Airbnb has worked the calculations and applies this to all of your new your bookings.
The advice that they are giving, is that if you want to retain your per night return, then you need to adopt their calculations before the dates given for your geography.
There will be a single fee imposed... what you need to decide is to adopt their calculations or try and manage your own rates in order to maintain your return.... I suspect the latter is rather time-consuming if you have multiple sites, fees (pets/ additional guests/ taxes)... so really only one sensible decision.
Best wishes,
Regards, Graham