"It doesn't work" is usually not a very good description of the problems your QlikView environment is experiencing.
Can you provide more information about what messages you get? What the Apple client is displaying when it tries to open the AccessPoint? Whether you get a login prompt when acessing the QlikView server? Also post the version (including service release number) of the QlikView server.
Every QlikView version has an updated PDF document called "QlikView Mobile Client Reference Manual_ENG.pdf". The steps are listed in that document. If you haven't got it, you can download it from the Qlik Customer Downloads page. An older version is also available here: Re: Guide Lines for Accessing Qlikview on Mobile
On your iPad, can you reach the AccessPoint in Safari from where you want to? Can you open a document using Safari?
The Apple client uses the same communication channel to open the AccessPoint and any documents. The error message in your screenshot has something to do with your network blocking the client from getting in touch with the AccessPoint, not with the client or QlikView.