Hi @Akr ofly ,
Could you please confirm that the password writeback connectivity in the Azure portal is showing up and running? If it is, then please toggle the password writeback service on and off and re-run the Powershell commands to see if it is reflecting.

If you see a connectivity failure, then it might be one of the following issues:
1) There might be a network connectivity problem.
Double check that firewall isn't blocking anything and that outbound HTTPS access is required to the following addresses:
*.passwordreset.microsoftonline.com
*.servicebus.windows.net
2) You may need to restart the Azure AD Connect Sync service, as shown in the screenshot:

3) Disable and re-enable the password writeback feature. (Disable the feature and configure it. Then re-enable it and and reconfigure it.)
4) It might not be enabled in Azure, or you could be missing some licensing. If this is the case, make sure you have the writeback enabled in Azure itself and you have the correct licensing applied.
For full troubleshooting steps, see the Troubleshoot Password Writeback article.