After you log in, use the Publish item on the personal menu to navigate to the publishing area. On top of the publish dashboard (=left sidebar) you'll see the Profile item. If you open it you will see 2 profile tabs: Profile (also referred to as the core profile) and Extended Profile. The Extended Profile is what you filled on the registration form; only the first name and last name are visible within the community, not the Conversation. All of the data in the core Profile can be seen only by you and the admins.
Please fill in as many fields on the Profile tab as possible. That information helps the admins approve your account. In particular, you must upload a true picture of yourself, enter your date of birth, and fill in your bio. Links to websites and social media sites that have additional information about you will be helpful, especially for finding the most suitable role in the community.