To be honest I have never heard of Plater before so no idea if they have a forum or not, there is nothing on the Minix forum regarding Plater so I would suggest you approach the reseller where you purchased it from and ask for help. Sorry about that.
It would seem this is a re-branded C120 remote, try this and see if it works:
This remote control has the function of automatic sensor alignment. Only operate this step when the mouse cursor behaves abnormally.
1). Press the “Back” and “Home” for 3 seconds, the indicator begins blinking quickly.
2). Leave your hands from the keys and keep the remote control absolutely still.
3). When the indicator keeps turning on, sensor alignment succeeds.
Notice: Keep the remote control still. If the remote controller moves, the data may be incorrect, and it needs to be readjusted.
Plater has no relation to MINIX.
If the instructions Marty provided don't resolve this problem, I suggest contacting the seller you purchased from.
This forum is only for MINIX products, not other brands unrelated to us.