Depending on what you are trying to do the App the app may not work, I tried this.
For me the last 48 hours was when thing came unstuck. The advice from CI was they need to have your full name to check in including your middle name (if you have one) has to be on the ticket or you cannot board. The advice from QF (VIP Team) is the partnering agreement does not require QF to pass on your Middle name to CI. On other sites and reports on this site if your middle name is not on the CI booking when checking in and hand over your passport the CI agents will update the booking and issue your boarding pass. In my case I had checked in with QF and the CI sector was on QF paper. At boarding I was pulled from the line escorted to the desk and was reissued with a CI boarding pass that now displayed my first and middle name and I assume this came from my passport details. Sure a bit of buggering around but this was my first trip with CI and did not know what to expect. Would I fly CI again, absolutely and wouldn't have to think twice about it.
@eagle_boy stop worrying it should just work out.