To retrieve your username and password, you can try the following steps:
1. Look for a "Forgot Password" or "Forgot Username" option on the login page.
2. Click on that option and follow the instructions provided.
3. It may ask you to provide your email address or answer security questions to verify your identity.
4. Once your identity is verified, you will receive an email with instructions on how to reset your password or retrieve your username.
If these steps don't work, you can contact the customer support or help desk of the platform or organization you are trying to access (in this case, OWWA) for further assistance.