In the row of the user, you want to delete, click on the List icon to get to the detail view.
Here you can click on the Trash can icon to permanently delete the user.
Confirm the checkbox informing you that the user with the same email address cannot be created again via the admin interface and click Delete users.
If you only want to deactivate the user, click the Lock icon. The user will not be able to log in until you click it again.
If you delete the user and want to create it again after a certain period of time, you must contact the oneclick™ support via support@oneclick-cloud.com.