This is answer for Q.3
Semua key atau sandi tersebut telah disatukan dalam file pdf dan saya simpan di Google Drive dan di hardisk komputer pribadi, hardisk tersebut sudah saya enkripsi dengan bitlocker.

In English : All the keys or passwords have been put together in a pdf file and I save it on Google Drive and on my personal computer hard drive, I have encrypted my hard drive with bitlocker.