Apparently , you are doing something wrong , from the online account , delete the current application or withdraw (I don't remember)
Start a new one : hit the first link: Vist, study , etc...
You will be asked for a number , just say you don't have and check eligibility , be careful when you answer the questions.
At the end you will be provided with a list of required documents.
It is ok to say No for: "Are you giving someone access to your application?".
Yes.