Pixelmon on BungeeCord - battle

Hello,
I have a question, if it is possible to have ip-forwarding false, online-mode true and still be possible to battle with pokemons.

I know, that SpongePls is exist, but it is working just with IP-Forwarding true, but I need to have IP-Fowarding false.

Is there a way, how to be able to get it works?
I figured out, that:
IP-Forwarding true + SpongePls + Online-mode true = Battle is working
IP-Forwarding false + SpongePls + Online-mode false = Battle is working (SpongePls is not even seems to do anything)
IP-Forwarding false + SpongePls + Online-mode true = Battle not working (SpongePls is not even seems to do anything)

Is there a way how to have this combination IP-Forwarding false + SpongePls + Online-mode true and battle get to work?

Thank you all for your suggetions.