Bettermode supports cName www.YourDomain.com
For most modern browsers if the visitor submits www.yourdomain.com the browser will remember that route if they then enter just yourdomain.com
If you want full support for root domain redirect, you may want to host you DNS Records on Cloud Flare and review my post on our BetterMode Site (SoftwareHunt.io) below (took quite sometime to get this solution right)
https://www.softwarehunt.io/community/post/how-to-properly-build-a-root-website-redirect-to-www-on-cloudflare-com-ftAmVhGdOk15jPb