CMN Mail Connector - Notes Client 9.0

Hi everyone, 

I would really appreciate if you could help me. 

Here on my company we are updating our CMN envrionment (current with WServer2008RS) to WinServer 2019. We have already installed all the requirements for CMN and we also installed Notes Client 9.0. We are trying to activate the mail connector on CMN console but it says it cannot find a valid client version of Lotus Notes on the computer, have anyone passed through this ? 

Thank you !