Best answer by YegorP
When it prompts you to enter the keycode on your mobile device, please enter your original, all letter keycode instead of the new, alpha-numeric keycode you recieved when you upgraded. This should solve the issue and let you activate your mobile protection. If you are not able to find this keycode, we can provide it for you on a private message or you can open a support ticket at: https://detail.webrootanywhere.com/servicewelcome.asp.
Social Online Support Engineer