Hello.

Good to hear from you. It might be some technical error or you might not have been allocated a seat. Whatever the issue is you can check it with the Helpline centre provided by AIIMS or you can email them at their official ID. Here: https://www.aiimsexams.org/

All the best.

Don'tworry firstly I was also facing the same problem but now it is opening and you can take a print out of it.