The Airbusses are in use by tens of thousands of people so we are pretty sure the files themselves are okay. Keep in mind that these are complex aircraft (very different from Boeings for example) and that you need some detailed knowledge to fly them.
All that information is given in the Vol 6 Step by Step guide. Have you tried following that one? And if you did, EXACTLY at what point does what you see on screen no longer matches the text? With that information we will be able to provide you with more detailed assistance.