In order to have access to the Internet and blackberry messenger services, you must have the blackberry add-on. This costs £3 and must be bought at the same time as buying your goodybag. The add-on gives blackberry members Internet and blackberry messenger services.
You didn't mention buying the £3 blackberry addon with your Goodybag, if you didn't then that's why it isn't working. You'll need to download Opera mini from app world as you now cannot add the BB addon until your Goodybag has expired.