Can anyone tell me how to go back on 15% commission

it should only apply to the dates you selected.

Reminder: Never post action requests, will never be seen nor actioned.

If needed, Simply report to BdC Partner Support , see below 3 methods.

Message or Call BdC PartnerSupport ***

1. In the extranet, go to the ‘Inbox’ tab.
2. Select ‘Booking.com messages’.
3. Right Pane - Click on ‘See Contact Options’. 
4. Choose Account
5. Now choose Other
6. Then at bottom , See all contact options, and click Message or Call
7. As there is no one number for all partners, the number for your nearest BdC Partner Support is then revealed.

8.  

   *** public main lines via Where you can reach us  

9. How & Why Add your Listing to your Partner Community Profile

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