Clicker: Flyff Auto
runs in a browser, which has different detection capabilities than the original client. Always check your specific server's rules regarding macros. Using tools to "play the game for you" while you are AFK can lead to account bans if detected by GMs.
This is the most recommended tool on FlyFF subreddits. It is simple: choose a button (Left click), choose a delay (e.g., 50 milliseconds), press F6 to start. flyff auto clicker