Hello,

Non-payment of seat acceptance fee in JoSAA counselling has nothing to do with your appearance in JEE Advanced next year. If you do not pay the seat acceptance fee within the given time the seat allotment will be rejected further you won't be able to participate in the counselling in the upcoming rounds. The last date to pay the seat acceptance fee and upload the documents for round 1 seat allocation is October 30, 2021 by 5 PM.

A candidate can appear for JEE Advanced for two consecutive from the year of passing in the qualifying examination. If you have passed 10+2 or its equivalent in 2021 then you will be eligible to for JEE Advanced 2022 if you have qualified in JEE Main 2022. If you have passed qualifying exam earlier than 2021 then you are not eligible to appear for JEE Advanced 2022 even if you qualify in JEE Main 2022.