Hey Antima! I think you don’t need to worry because your online registration for PW NSAT is completely valid and there is no issue with that. Usually, once you register online, you cannot directly switch it to offline mode. My suggestion is to continue with online registration, as the process and eligibility remain the same. Still, if you really want to confirm, the best option is to contact PW support team. They can guide you better if any correction option is available.