Problems with biomes o plenty modded server

I made a modded server that has biomes o plenty. I created the world correctly with the ''biomesoplenty'' and played without any problems yesterday, today we played again but after walking some time we realised that the new biomes arent appearing correctly and instead its just a bugged deep ocean in the map where the new biome should be, the already generated biomes dont have problems but the new ones that should be genetaring right now arent working.