Mathematiqs

I have a problem with fire on my minehut server. The problem is that it is not spreading or burning. I havent set any rules to stop fire. I have used dofiretickstrue, allow fire... anything i could find. But somehow fire is not doing what fire should.... I do have world guard/edit and essentialprotect. but i dont think they are the reason the fire isnt working... I dont know how to let fire be fire. any tips?