@Anthony Leveritt Thank you for reaching out to us, As I understand you are trying to deploy Azure AD Password Protection feature and the same is not working as expected.
To start the troubleshooting, would like to check type of mode it is deployed audit or enforced mode ? - https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-password-ban-bad-on-premises-operations#:~:text=select%20Save.-,Modes%20of%20operation,-When%20you%20enable
Would request you to go through these steps of Password testing procedures as mentioned here - https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-password-ban-bad-on-premises-faq#password-testing-procedures:~:text=AD%20Password%20Protection.-,Password%20testing%20procedures,-You%20may%20want
If the above information doesnt help to resolve this issue, let me know we can connect offline and troubleshoot this issue further.
You can send us an email on azcommunity [at] microsoft [dot] com referencing this issue with a subject line "ATTN:Givary" and link of this QnA post as a reference.
Regards
Girish