There will be two options displayed while the time of allotment, one is confirm and proceed for next round  and next one is confirm your seat. If you have clicked on proceed and Continue then yeah you can apply for next counseling but if you have clicked on confirm your seat you cannot apply for next round

Coming to fees, yeah you may get full fee refund but yes 60 to 70% of fees refund for sure. You need to visit College for refund And carry a valid reason for not attending the college for confirmation