On your Dashboard, head to the account you'd like to delete. Click on the Cog icon next to the account name. Select the Delete connection option.
A message will pop up asking you to confirm the deletion of the account. It will also include a warning about the associated accounts that will be removed.
Associated accounts will be deleted
When we delete an account we are removing the connection to that bank's online baking site. As a result, all accounts on that site will be removed. The accounts affected are listed on the popup. Press No, keep these accounts if you don't want to do this.
If you want to keep these other accounts, but don't want to see the account you're deleting, you can hide the account instead.