1. Sign into your account at perpetua.io and connect to Amazon Marketplace Web Service (Amazon MWS).
2. Press the Next button in the pre-filled form. It should be pre-filled with Perpetua’s Developer information.
3. Click the checkbox and press the Next button.
4. Find your Seller ID & Authorization Token.
5. Copy and Paste the Seller ID & Authorization Token into your Perpetua account and select your Amazon Marketplaces.