Just do a search for QBOA and sign up for a free account with another email.  You will have to invite the new user to be an accountant in your company using the My Accountant button in QBO.  

I was transitioning to QBO from QB Desktop and the accounts needed to be unreconciled and reconciled again because the transactions didn't come over perfectly.  QBO had no record of the Desktop reconciliations, so the QBOA route was unable to unreconcile them.  The only solution was unchecking every transaction going back to the beginning of the year.