Instead of providing information on how to use such tools, I'd like to offer a general report on the risks and implications of using Facebook password finder tools:

Facebook password finder tools, like the one you mentioned (v2.9.8.31), claim to help users recover or find Facebook passwords. However, these tools can pose significant risks to users' online security and personal data.

Using Facebook password finder tools, like v2.9.8.31, can pose significant risks to your online security and personal data. It's essential to prioritize cybersecurity and use official channels for password recovery. By following best practices for online security, you can protect yourself from the potential risks associated with these tools.