Hello! Thanks for your interest in our game.
Yes, we're aware some antivirus programs like BitDefender (and apparently Norton now, too...? Strange, I ran the files through Norton before, and it was fine for me.) flag our game as a virus, even though all the AV softwares we have access to all report our game as clean. If you still want to play and you are comfortable with doing so, the way to make it stop removing the file is to whitelist it in your antivirus, I believe. But if you are concerned and would rather not do that, then we suggest you not to proceed. Sorry for the problems, but thank you for your interest in our game!