You must use the Biomes O' Plenty world type when creating a world for biomes to generate!
To use this mod on a server, you must delete any existing world(s), and make sure the use-world-type option is set to true in /config/biomesoplenty/server.toml (Set level-type in server.properties to BIOMESOP on 1.12.2 and below), and let the server generate a new world. Existing worlds require an NBT editor to change the world type.
You may use this mod in a modpack as long as you do not sell it via any means (Exclusive access from donations, etc.), you give credit (Linking back to this page), you do not make any changes to the mod aside from config files, and you follow all of the other terms listed in the license.
Biomes O' Plenty is an expansive biome mod for Minecraft that adds a slew of new, unique biomes to the Overworld, Nether, and coming soon, the End! To go along with the new biomes, it adds new plants, flowers, trees, building blocks, and much more!