support www subdomain.
The thing is I have my website in www.domain.com and when user visits domain.com he is redirected (with an http 301 redirection) to www.domain.com but the tracker viewer of heatmap just displays the 301 page (because I can't add the www.domain.com as the website)
EDIT: I've found the issue, Cloudflare quirky setup. It works with www, too.
This feature won't probably be implemented too soon but I will keep the ticket open.
The reason why this isn't implemented is because from the user experience point of view acessing your site as domain.com OR www.domain.com should lead to exactly the same content. This is the recommended way to server your website content and you should redirect the non-www version of your site to the www version.
So, by not implementing this "www" support userTrack "forces" the webmasters to follow the best-practices in order for it to work properly.