To edit the existing profile

1. Go on Magento 2 Store Admin panel.
2. On the left navigation bar, click the AMAZON INTEGRATION menu, and then click Profile Manager.
   The Manage Profile page appears as shown in the following figure:
   
3. Scroll down to the required profile row.
4. In the Action column of the respective row, click the Edit button as highlighted in the above image.
   The profile editing page appears as shown in the following figure:
   
5. Click the required section, and then make the changes as per requirement in the respective section.
6. Click the Save button.
   The edited profile is saved and the success message appears on the Manage Profile page.