I am a little unclear on exactly what you are asking, but if you are having issues with iCloud Keychain, the best place to start working on them is this article -
Thanks for using Apple Support Communities.
I changed the password on one of my accounts with a recommended password from iCloud Keychain. But when I tried to log in again, it didnt automatically fill the password for that site, so I typed in the old password thinking that it didnt change. Then iCloud prompted me to save the old password into keychain. Turns out it did get changed to the recommended password, now I cant log in because the one saved in iCloud is the old password.