Please read the installation directions
Activating the server: Tools -->Activate Server. If all is OK, you should get an alert: "The address of your server is:< web address>". The server is now on till you close the web page running it. Please open a new window to run other activities in parallel (not a new tab).
If you don't get this alert, it means that something is wrong with your installation, and you need to perform again the installation.
Please contact us in every matter bothering you!