NeoPop Multiplayer?

So, I'm a big fan of Card Fighters Clash (1 and 2), and want to play the game with my friends since the AI is dumb. I tried using two instances of NeoPop on the same PC, and both linked up without any issues and I could do multiplayer battles.

However, then I tried connecting my PC and Laptop, and it was connected, but I was unable to start a multiplayer battle, or trade cards or anything. The Link-up menu (in Neopop) showed both devices connected but couldn't do anything.

I then tried using Hamachi client and changed the IPs to the ones provided by Hamachi. The devices linked-up again but couldn't play multiplayer at all.

I feel like there's something we can do to play multiplayer. If Dolphin emulator can play Gamecube and Wii multiplayer then this shouldn't be a problem. If 2 local instances work then it shouldn't be too hard to make two instances from different devices work.

Anyone has any insights regarding this?