The structures of this mod are not generating when combined with Terraforged. On their GitHub it says that mod devs have to "register the structure seperation setting" for that to work. Not sure what that is but maybe it's a hint lol. https://github.com/TerraForged/TerraForged/wiki/Mod:-Structures:-Compatibility

Having issues with this too. Tried enabling vanilla lakes to see if that would help, but to no avail.