I have created a application for testing write access APIs. After registration, I have received access token on hitting the url (stackexchange.com/oauth/dialog?client_id=3973&scope= write_access&redirect_uri=stackexchange.com/oauth/login_success). Now, I tried to post a question from StacExchange API test page (api.stackexchange.com/docs/create-question). But it is showing an error : "We are no longer accepting questions from this account.".

What could be the reason ? I dont think I have been restricted from posting question as I could post questions manually.What is the solution ?