Hi doubloon holders! Could you answer on few my stupid questions?

1. Why antivirus (built-in Windows 10 with latest updates) says that Doubloon-qt.exe has a Trojan:Win32/Bitrep.A ? Downloaded it from github.
2. PoS 5% yearly? 5% / 12 = 0,416% every month? Right?
3. I saw that name of the coin will be changed, so don't I need to swap coins?

Thank you.