If you have forgotten your username you should be able to log in using your email address. (You will then be able to check the username on your account details.)
If you have forgotten your password, go to the OpenAthens login screen and click on the ‘Forgot Password?’ option below the form. You will need to enter your email address in order to receive a new temporary password.
Contact firstname.lastname@example.org for assistance if you are still having problems.