Ive got it working without any problems folowing the instructions.
Its connecting to my wifi router.
I can get to the webserver sketch that I connected up to a buzzer and could turn it on and off.
I havnt done anything major with it yet.
As to applications have you looked at the coupleof projects documented on there forum?
The examples in the library work.
Whats the problem?
Have you looked at the Async forum to see if there is help there?
Its probaly nothing more than setting the correct ip address, gateway and credentials for your wifi router.
Gordon