Another thing that's not helping, is that this extension i really user-unfriendly, with descriptions really hard to understand even with the documentation in hand. For example, when creating sites from the frontend, I really don't understand why the user have to enter both alias and prefix? The prefix should be autocreated, and not put on the user registring.
The worst thing about this extension is that in order to "sell installations" you have to buy quouta from the developer. Really disturbing and hard to find information about on their website.
I really hope that this extension gets forked in order to get a good idea work for the public. Since the developer doesn't care about more than the user's money.
I'm strongly considering this myself right now in my frustration over this bad extension.