Hello
According to the faqs provided by AACCC for Ayush centralized counselling you were eligible for participating in the second round of counselling ( https://aaccc.gov.in/aacccug/Document/FAQs.pdf ) however, AACCC has already released the final result or round 2 ( https://aaccc.gov.in/aacccug/ ) hence I suppose that is why you are unable to register for round 2.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile