This license key of Bitdefender is only designed for Windows devices not for MacOS or Android devices. But the good news is that they have separate software for macOS and Android devices. 

After one year, you will need to purchase a new license key to continue to take leverage from Bitdefender Internet Security.

No, it is made to run quietly in the background, providing powerful security without affecting system performance.

You can use the license key of this Bitdefender software on up to 3 different devices. We also provide the license key for 1 device and 5 devices.

The extra features of Bitdefender Internet Security over Bitdefender Antivirus Plus are that it provides a two-way firewall, camera protection, and parental controls to improve privacy and security.