From a technical standpoint, the only legitimate way to "bypass" a server-side lock is through a security vulnerability, such as an IDOR (Insecure Direct Object Reference). If a platform like Unlockt.me has a flaw where changing a digit in the URL exposes a different user's file, it is considered a major security breach.
From the publisher's perspective, Unlockt.me is a monetization tool. They earn revenue or gain social followers every time a user completes an action. From the user’s perspective, it is a "free" way to get a file, a cheat code, a cracked software key, or access to a private community. Unlockt.me Bypass