Some programs require you to have special access credentials to hack on certain assets. These credentials can be shared with you via a representative from HackerOne, or you can retrieve the credentials from the security page of programs using the credential management feature.
To access credentials for programs using credential management:
Go to the program's security page.
Click Show Credentials in the Credentials section.
Create an account using the credentials provided.
Enter the username of the account you created.
Click Save.