To get paid on Oyster, you need to add a payment method.
Open payments in the left hand menu and go to payment information. You can add a bank account.
If you are adding a bank account, you can select the currency and add the bank account details.
Once your account has been added, you need to set it to primary. Set an account to primary by clicking on the 3 dots to the right of the account number and click set as primary.
Once you have a primary payment method set you are ready to receive payment.