For the Write to Etsy connection, you will need to follow a few steps for connecting as below:-

1. Once you are in the Stock Sync dashboard, click on the Setup New Feed.

2. Click on the Update existing Products in store and click continue.

3. Enter "etsy" in the field provided to search the templates. 

4. Once search the template, click on the Export from Shopify to find the Write to Etsy template.

5. Then, choose Customize the template to set up the feed. 

6. Click on the Authorize to get the connection.

7.Enter Etsy account credential.

8. Click Allow access.

9. Once successfully Access Authorized, you click the Next button there to continue with field mapping.

You might need to authorize again if failed to get authorized from Etsy.