Websites claiming to offer "updated" or "free" license keys frequently distribute or outdated "cracks" that can compromise your computer or save games.

FM21 received several patches during its lifecycle. A cracked version of FMRTE often fails to work with the latest game versions (like 21.4), leading to game crashes or corrupted save files. How to Use FMRTE 21 (The Right Way)

It is important to note that for editing purposes. While you can download and use it as a scouting tool for free (to view hidden player attributes like Potential Ability), you must purchase a license to save any changes or edits.