Each time you start a new session, you will receive a session ID. You can see the session ID in the upper right.
Please make a note of your session ID in case you intend to use the credentials later or if you want to continue at a later point in time.
A password is not required. If you have lost your ID you will not be able to re-login. In this case, you need to repeat the session. Based on your reply you might be eligible to contact a therapist. Always be aware of your local legislation concerning mandatory reporting. To continue the online treatment session is always an option.