Yes, it is a false positive. ALL Antivirus usually do not like mods and will always trying to get you to not use the mod. This is their business
It's entiely up to you to trust the author or the antivirus
Works well on phones but very unstable in emulators. For those stuck at black screen hit the back button twice and give it a bit of time and main screen should pop up, also make sure you follow the instructions for the obb.