This addon does not function on my brother's account but it does on mine. I logged into his account on my computer and my account on my computer. Upon logging into wow his instance of the game pops up an empty BattleGroundEnemiesNews frame while mine does not. His instance of the game does nothing when I type in /bge, my accounts instance of the game pops up the Test mode interface when I type in /bge.
Trying to use this addon performs exactly the same on his computer as it does on mine. It's not an issue with the addon version, his hardware, or in game settings as those are all the same when I log into his account on my computer or his computer.

I did a work around by copying the BattleGroundEnemies.lua file from my account to his account and edited in his characters. Sorry for posting this.