Step 1. Open the Seller Assistant App website in your Firefox browser.

Step 2. Click the Download link in the top navigation menu.

Step 3. Then click the “Install for Firefox” button. You will be redirected to the Firefox Web Store.

Step 4. Click the “Add to Firefox” button.

Step 5. Then, click the “Add Extension” button. Wait until it has been downloaded.

Step 6. Now the extension is installed.

Step 7. Click on puzzle icon in your Firefox browser.

Step 8. Find Seller Assistant App extension and click on the three dots icon.

Step 9. Click on Manage menu item.

Step 10. Grant permissions to run Seller Assistant App on every website.

Ensure that the following permissions are granted:

✔️ Access your data for sites in the https://sellerassistant.app domain

✔️ Access your data for sites in the https://amazon.com domain

✔️ Access your data for https://sellercentral.amazon.com

Step 11. Now the Seller Assistant App extension is installed and ready for use.