Once you have paid, and your payment reflected as such, the computers will automatically activate your application profile.
In order to continue, you simply have to go back to the website address where you first registered. This time, instead of clicking on "register", you click on "Login". This should take you to the first section which you have to complete.
If you are unsure what to do, please contact us at email@example.com, or click the blue button in the bottom right-hand corner.