You might want Probely to scan your website behind a login page, like an authenticated user. For that, Probely needs to have credentials to log in on your site. It is recommended that you create a user for the tests since Probely will submit forms and click buttons and can "pollute" the account.
You can configure authentication while adding a target or on the target settings.
Here's a GIF to shows how to do it while adding a target.
If you've already added a target, you can head to the target settings and follow these steps:
Step 1: Go to the "Settings" tab of your target and go under "Target Authentication" and select "Form Login"
Step 2: Add the URL of the login page
It might be something along the lines of example.com/login.
Step 3: Add your first Field Name and Value (usually email or username)
The field name is the HTML "name" attribute of the particular field. Usually, it's "email" or "username". To see the field name of a field, you need to Inspect the field (Right-click -> Inspect). You can see how to do this in the GIF above.
The field value is the actual username or email (For example, [email protected] or ExampleUser1).
Step 4: Click "Add" to add your second Field Name and Value (usually password)
Once you click add, you will get two more fields to fill out. Here you'd usually put the password field and value, the same way you did to the username.
Step 5: Once you are done, click "Save"