We have recently changed the way DSDs are registered online. When you log on to the PADI Pro Website and click on the DSD Registration option it will open the PIC Online window where you will need to click the blue hyperlink that says Proceed to Application.
This will bring you to the PIC Online Application page where you are now able to register your DSDs as well as your other student level certifications.
Providing you have the appropriate instructor rating, Discover Scuba Diving should be one of the options available to you in the Certification Level drop down menu. Please be advised that you will not be charged any PIC Online credits for submitting DSDs via the new PIC Online site.
The DSD registration service is still being offered free of charge, however please be aware that a PIC Online credit will be charged for any other certification levels that you process via PIC Online (like Open Water, EFR, Rescue, etc.)