Hello,

You will be eligible for JEE 2020 if your number of attempts have not crossed above 3.  If this year you gave JEE for 3rd time then you can give JEE exam next year.

NTA has given the limit to the number of attempts but there is no age limit. So prepare accordingly.

If you got IIT or NIT in the end rounds then you should have taken admission. This mistake will again cause you a one year loss.  if possible contact to the IIT or NIT admission authority if there is any possibilities to take an admission.

You may not receive the payment as you have opted for IIT and NIT in 7th and 6th counselling rounds respectively. You get refund only when you are not allotted with any college by the end of counselling process.

For more confirmation you can put a mail to Jossa and ask regarding the same.

Hope it helps!