You can only apply once with the pin. It generates an application number for you. If you have to come back to continue your use the 'Recover Application Number ' link below the 'Continue with a previous application' link to confirm your application number. Click on the 'Recover Application Number' Link on the your Left. Put in your Confirmation Order Number in the box provided and click on 'Refresh'.
If you fail to find your application number or you find different details under your application number send your details including the following: Surname, Firstname , Confirmation Order Number and Jamb Registration Number, School Applying to , to email@example.com
If you have any other issues with the online application please send your details as above describing your problems to firstname.lastname@example.org