If you are e.g. using a development, testing or staging environment you may have a password protected website. In this case you have to enter the access credentials in the Recolize Tool for us being able to access your article feed url.
On the domain page in the Recolize Tool please use the following url scheme to import a Recolize feed from a password protected url:
https://username:password@www.domain.com/feed.csv