Problem is that sometimes I can't access my site. I developed my site using Ruby on Rails 3, Refinery CMS and deployed it to heroku. I bought the domain from domainsite.com. I can always access my site using the heroku suffix i.e. mysite.herokuapp.com. I am having sometimes problems when I want to access my site typing mysite.com in address bar. This behaviour is really strange, because after a while without any changes I suddenly can access the site. And I can't access my site it I use www. prefix. This is the problem I surely like to fix.
Does anyone know where might be the cause of all of this problems?