Because it isn't worked on. Look a the active forum count. That should be a good indication of how many devs are going to work on it compared to other bots.
Well, obviously that shouldn't be an excuse for the author of this bot, I'm not any satisfied paying 25€ for a Hearthstone Bot that can't play one of the principal game modes of this game (and the most fun mode), and I will not pay it anymore the next year since the bot doesn offers a basic feature like this one.
Thanks for comment!
whats said by a random guy,like Phelon above,on the forums doesnt mean its correct/true.
having a bot doesn't mean everything is possible via the bot,brawl mode is a dynamic aspect of the game and its changing dramatically every time.
so the truth is we tested an internal build with Arena Brawl support and will be added if/when we feel its ready to go public![]()
creating a bot for something that completely changes every week is rather pointless. by the time the coding is good, the tavern brawl would be soon over.