It got reduced on the result night of the last session, because a major portion of your answers were found to be against the EALP guideline no.14. Even in the ongoing session also you are doing the same - entrance-exam.net/forum/schooling/can-i-apply-jee-if-passed-higher-secondary-examination-vocational-2-scheme-1363961.html#post7460281
That's reference number or transaction ID, not account number.
Since, the beginning your payment is being done in this HDFC bank account - prnt.sc/yNlmYV-cTlHq including this time as well. And that's your one and only account registered with us since the beginning - prnt.sc/FhnGCX9aCwz-