I followed the instructions to the letter and still, nada. I give up. I've had Webroot on my PC for years, the mobile devices will have to find another solution. This is ridiculous.
Best answer by TripleHelix
Just to make sure you have Webroot SecureAnywhere Internet Security Plus: https://www.webroot.com/us/en/home/products/compare
If so then you can only install the Free SecureWeb Browser and if you have the Complete version then you could install the Back Up & Sync, also note that Apple will not allow AV's to run on there iOS devices. https://discussions.apple.com/thread/7707879 and here: https://www.techadvisor.co.uk/feature/apple/do-you-need-antivirus-on-ipad-or-iphone-3669234/
And if you had the Complete version Back Up & Sync: https://docs.webroot.com/us/en/home/wsa_backupandsyncforios_userguide/wsa_backupandsyncforios_userguide.htm
If you have more questions I will ping our iOS expert Sherry!