Forgot username or password?
To access the course you need to be logged in to the Linux Foundation training portal: https://training.linuxfoundation.org/portal
The portal uses the same Linux Foundation identity that you use to sign into linux.com so that should make it easy.
The system uses a single sign-on integration to launch the course player from the portal. In order to not break that integration, please never attempt to change your username or password on the course player system (hosted by 360training.com). Instead, go to the identity site: https://identity.linuxfoundation.org/