Did u get any better preferences in COAP 2? Whats ur gate score. I can help if u provide more details

Yes you have to pay a JoSAA counseling fee in order to show your participation on JoSAA and also to mantain your participation on counseling for subsequent rounds.

This is a one time payment, any upgradation or change in the choice does not results in the repayment of fees.

If you decide to back out from the counseling at later stage, you can/allowed claim for a refund. They after deduction of mnute counseling fees returns the entire sum into your bank directly.

And if decides to accept/lock the seat then those sum of money would be used in spending your admission fees of that particular college.

Hence mataining your participation on JoSAA counseling is a win-win situation

I strongly recommend the aspirants take part in all the rounds of counseling and even if possible go to spot round.

All the best for your future endeavours.