Dear student, the registration and choice filling procedure for the special round of CSAB 2019 has already closed at 5:00 p.m. today July 27 2019. You won't be able to fill up the form now and only you can print out the locked choices in sometime from official website of CSAB.

Yes the problem is coming since you didnt lock your choices. But if you have filled some choices don't worry they will automatically get locked in the same manner you filled them . After locking you won't be able to change them