Should I Activate Zander’s Ultra Antivirus Feature if I Already Have Antivirus Software?

No, there is no need to have two antivirus programs on any device. If you are already using a different antivirus software and you are happy with its functionality, you can still upgrade to the Elite plan and take advantage of the other features of the product like the UltraVPN, Credit Lock, and Financial Account Takeover monitoring.
If you do opt to utilize the Ultra Antivirus feature of your Elite ID theft protection plan from Zander, any existing antivirus programs (such as Norton or Windows Defender) should be uninstalled prior to downloading Ultra Antivirus. Having multiple antivirus programs on a device may cause problems during installation and result in less-than-optimal performance on your device(s).