Hey, I want to know if this is a config issue/ on ic2 end/ where the problem is in general, whether it's fixeable, it should be fixed, and where I could start to do so.

Game Version is Enigmatica 2: Expert 1.68 with fluxnetworks-1.12.2-3.0.19-21 and industrialcraft-2-2.8.164-ex112

This is not an issue. Because flux point isn't a part of IC2 energy network, so you can only connect it to IC2 storages for powering.