The 402 Payment Required status code means that the private feed is locked because the feed owner's subscription has expired.
​
If the owner of a private feed downgrades a paid subscription to a free one or if the subscription expires, any private feeds on the account will become read-only for a period of 7 days. After this period, the feed will become locked, meaning private feeds cannot be accessed until the subscription is renewed or the feed is made public.
​
​Note: Locked feeds will not be made public, nor will they be automatically deleted.
​
​Upgrading to a paid subscription will automatically unlock the private feed. Another option is to make the feed public and restore access. Note that making the feed public will make it accessible to everyone.