Hello Subrata,
Please logon to eHealth OCE console using your admin account and see if it works. Username should be admin and by default the password is set to ehealth, if you have not specified. Once logged in, you can go into Task and Information - User Administration and see ehealth user listed there. Double click on it to modify permissions and click on OneClick tab. You will see access is disabled for all under OCE.
We recommend to keep this as it is and disabled and create users as per your requirement. For administration, use the default admin account.
I hope this helps.
Thanks
Darshan