They have changed the login screen so you have to use your existing user name and a password. The passport number is no longer used.
I sent an email to help desk to reset my password so I can login and it allows you to log in to the eresources site on their website but not to log in to the overdrive library.
I am guessing that only Singapore residents and those studying/working in Singapore can now access the overdrive library.
I guess the party is over for me as there are no online library where I live