You can integrate Etsy to QuickBooks Online (QBO) through your account. Here's how:
On the left navigation bar, select Apps.
Go to the Find Apps tab.
Use the search bar to find apps.
Moreover, when asks to add a bank account, is it for Chart of Accounts? If yes, I recommend contacting Etsy so they can walk you through the steps. They can also provide you more details on how the application works with QBO.
Please know that you're always welcome to post if you have other questions. Have a good day.