Hii

The last date to generate the RUC was yesterday 17th february 2019. If you have not generated the code in time, it is not not possible to generate the code and so the final registration could not be done.
Although no change would be given as per the previous notice of AIIMS but you can for once put up your query through the help portal on the dashboard of your account or by calling on their helpline number.

Thanks!!