First, you can try to delete then re-add your accounts when it went wrong for an unknown reason. And someone said it works, but others saidsometimes when I need to fill in the password again I first get on a page to fill in my e-mail address however it doesn’t accept the account...
Accept the combination in the app. Note: iCloud Keychain isn’t perfect; occasionally, usernames/passwords created in one location won’t carry over. In those cases, you’ll have to add them manually. Managed Your Saved Passwords, Other Information You can find a running list of your saved...