When you create offers and select payment auto methods and you select it to be viewed on the checkout, you will need to set your API keys for the payment method. Example if you select PayPal, then after creating the offer you would need to include your PayPal keys so that users of the Peerwallet community can send you funds automatically. Follow the following steps on how to achieve this;
After an offer has been created, cyou would need to Modify it to set your API keys.
From the Modify page click on Modify API keys, it's the first button you see.
Input your Public Key, Merchant ID, Private key
, or Secret;
depending on the instruction given from that page. Each payment method has its own instruction, just follow what to input into these fields.
Click on Modify keys