I changed my password-but it didn't change

1Password 8.12.10 on Mac Sequoia.  In my 1Password account, on Safari, I changed my 1Password password on 3/26/26.  This change is displays correctly as the new password in the desktop application and in my browser, but only the old password works - I don't see the old password anywhere except  as a "previous version" (2024) when I look in the browser application, at my 1Password Vault.

1Password labels my "old" password (that still works) as "good" rather than "excellent" or "fantastic."  Besides, I've been using this "old" password way too long.  

How can I get the new password to actually take effect? 

Thanks