Conquest reforged and world edit

Aight so im not sure if this is the right place to ask this, but i installed conquest reforged and world edit in my forge server, but i cant use world edit. when i try commands like //Set //rotate //Sel etc it says these commands doesnt exist...

when i do /help all world edit commands are shown there tho... cant execute any

am i doing something wrong? xd

I opped myself ofc, and yes i used/can use vanilla commands like /time set day and /toggledownfall

Yes, i joined using conquest reforged, and it was installed on aternos too

Oh... yes i think thats where i messed up hahaha ill try thanks

i installed 1.12.2 world edit mod on my pc but its still saying http://prntscr.com/v3djzd