Victory Games, The Civil War

Looking for someone who knows how to live play The Civil War with Masking module and get Player 1 and Player 2 on opposing sides. No matter what I try Player 2 always ends up on the same side as the Player 1 and can therefore see the “masked” counters. What I am missing?

I did message the author and haven’t heard back yet.

Received an answer on Discord. Turns out Vassal uses the password and not the user name as it’s identifier. While doing testing between my desktop and laptop I entered the game room with different user names but the same password. Thanks to Benkyo for educating me.