Hi team.
Have tried with other free Control Panels, and I thought it is as easier. Yet I am losing my first confidence because of reading so many issues here.
I have the Dovecote and EXIM installed, and when entering into the email settings page to input the configuring values, it refreshes and go back to the same page of the Control Panel homepage.
I have submitted a ticket for the same, and hope sharing this with the bunch.