This extension comes with tremendous amount of documentation, but you can also get paid support that starts at about 8 euro. For me the installation was OK but the setup was not so smooth mainly because I did not read the instructions, but Nicholas help me out right away pointing out the obvious. With guys like me I don't know when he has time to sleep :)
BTW the support you pay covers more than one extension like Akeeba Backup, Akeeba Admin tools, etc. so the little money you pay in support goes a long way and if you are an experienced Joomla user you have all these extensions for free. In my opinion we all need to support our great Joomla developers with as little as you can to encourage them to continue their work.