Within a week, Nadia received an encrypted message through a dead-drop server: “Your FileFactory account is being used by 11 other IPs. Change your password. Scan for malware. Stay safe.” She did.

Treat it as a myth. Build your own using a debrid service. Your time, security, and sanity are worth more than a few dollars a month.

Most of these "premium databases" are short-lived, as hosting providers frequently detect and ban accounts that are shared across many different IP addresses. How to Use and Install JDownloader 2 Premium Database