I don't understand what is going wrong with my AdWords express
Saviour, fyi this is a mostly peer-to-peer volunteer AdWords support forum, so we do not have access to your account to set anything up.
However, if you have specific questions about setting up AdWords express we would be glad to try and assist. We'll need some more detailed information about the specifics of any problem you may be having.
Here is a Google article which may help. Google also publishes some good tutorials on YouTube, just search "AdWords Express setup" over there.