Hi @StefaniaSandu
It is always best to to register the online account first, this will help the Application follow.The first thing to do is to clear all your cookies and PC cache and try and register again. However, you may have set up an account ready for your use when applying for your contract and any details would be in the email contract confirmation sent to you.
It would also be an idea to clear all traces of the previous application from your icloud account and phone, when this has been done, you will be able to download a fresh copy. When you access the application for the first time this has to be done over the mobile internet, not WiFi, this is needed to find your account.
As you have only had your account for a few days, until you have received your first bill and are out of the proratered period, you won't be able to view any billing information from your online account or phone application.
Hope you are able to get this solved, live chat/Customer Services are there to help and this thread will be picked up by the Team here on the forum.
