All India Institute Of Medical Science [AIIMS] — Complaining about unable to log in account

Address:

kc/c-14 zemabawk, zemabawk kawnveng 2

I did basic registration last year and i still have my id and password but this year i could not login my aiims exam registration account, when i tried new registration my email phone number and adhar and voters id etc. it says already registered go to login account but i tried login and said, 'invalid credentials'.Even though i have password and id, i tried forgot login details and in that it showed you are not registered or your account is blocked. but i couldnt do new registration, kindly help me login