On the accounts tab you’ll find a list of all your store accounts in a two-column format indicating the name of the store and the email address attached to the log-in.
To add account(s) you’ll need to click the “Add Accounts” button and then select your store from the drop-down at the top of the pop-up. Once done, insert your profiles in a “email:password” format and then click “Import New Accounts”. You can also insert your profiles via a .txt file in the same layout.
You can remove an account via the trash-can symbol beside the account once added or by clicking the “Clear Accounts” button to remove all, doing the latter will bring up a prompt asking you confirm.
You can also add accounts to custom stores by navigating to the Accounts section, clicking "Add Accounts" then scroll down to "Custom".