I'm pretty sure that vape added a denicker in some update, it already warned me in some alert that the player wasn't real, and when I activated the timer in duels, the staff bot appeared and also warned me it wasn't a real player
it doesn't even make sense and fastplace is like you're doing auto cps, and most anticheats don't detect this, so i'm sure if you were banned by fastplace or if it happened, it happened on a server with horrible anticheat
In the worst case you can use delay 1 too