There is an issue with the fences / falling blocks. if a block falls on you and if you try to get out someone times it will kick you for flying or cheating. it is the same with walking on the side of a fence.
It is best to avoid walking on the side of the fences from now, sometimes you get glitched into it and the server will mistake your for flying/cheating. You'll most likely need a staff to teleport you out of that block. Hopefully the skygrid reset will come soon and fix that