Is it possible to reappear for NIOS Stream 1 Block 1 Sr. Secondary exam?

Hi , I'm a JEE second dropper who got 66% in 2024 class 12 HSC and registered for NIOS 2025 April exam , but due to health reasons I wasn't able to attend the exams , and when I try to register for NIOS April 2026 once again I'm not able to complete the registration process as it shows me my old details while verifying them , and when I log in with my old April 2025 NIOS account , I'm only able to pay fees for OCT 2025 , There is no option for April 2026. So why is this happening? Does it mean I can't reappear for April 2026?