Hi Sara! Thanks so much for pointing this out to us.
It looks like we've yet to sign our game as non-malware.
We'll be working on resolve this.
For now, the best options would be:
1. Pause your antivirus until the game is downloaded and opened,
2. Install the game on Android or iOS
3. Wishlist us on Steam and install once we release the game in Early Access!
Hope this helps!