RE SETTING OF E FILLING PORTAL

MY CLIENT  PREVIOUS CA  HAS EXPIRED ASSESSEE  UNAWARE ABOUT PASSWORD  THERE ARE THREE OPTION  1. THROUGH  ADDHAR OTP  -HIS  PAN HAS BEEN SUBMITTED FOR CORRECTION AS PER ADHAR BUT  DONT GET  NEW CORRECTED PAN EVEN AFTER 20 DAYS HENCE THIS OPTION IS NOT AVAILABLE

2. UPLOADING DSC -NEW PORTAL SITE IS NOT ACCEPTING NEW DSC

3.  THROUGH E FILLING PASSWORD RESET  :  AS  MAIL ID IS OF  DESEASED  CA HE IS NOT ABLE TO RESET

I WANT TO KNOW HOW E FILLING PASSWORD MAY BE RESET