Recently, Apple has been progressively refining the authentication framework for its App Store, a move that has inadvertently disrupted the normal login processes for certain third-party applications. Take, for example, open-source multi-account management utilities such as Asspp. These tools, which previously depended on user account login mechanisms, are now encountering persistent HTTP 403 errors when attempting to authenticate. Notably, this login impediment is not attributable to issues with the user's account, IP address, or TLS fingerprint.