change password for icloud to match my other devises
[Re-Titled by Moderator]
If you have changed your ID or password, have you followed the steps in this article?
What to do after you change your Apple ID or password - Apple Support.
I don't really understand what you are trying to accomplish. Please clarify. But, assuming you want to change a password, see:
Change your Apple ID password https://support.apple.com/en-us/HT201355. And, see what Eric Root says above about what do after changing your password.
How to change Apple ID password?
