In some cases, after you change your Appstate password your macOS Keychain can get out of sync. With this guide you'll reset the keychain and re-sync your passwords.
WARNING: Resetting the Keychain will remove any saved passwords you had previously saved in Keychain.
Step-by-step guide
- Open the Self Service Application
- Look for Reset My Keychain under the Featured section and click the Reset button. Note: You'll be prompted to restart your computer, so it's best to have all other applications closed.