The site for documentation and the pro version   is down

Hello @cristiano. Thank you for your interest and I apologize for any inconvenience. The website is now live. The links on the read me page will be updated this evening. Here is the new link: http://www.artistpress-plugin.com/documentation/.

The Pro version is still in development. When it is available you will be able to download it here: http://www.artistpress-plugin.com/download/