Calendar list showing field name instead of caption, even though Translation for field is created.

Hi,

Calendar List showing field name instead of caption given to the respective field. See the screen shot below.

Also any changes to Administration --> Communication --> List -->'Calender List' list not reflecting on the screen.

I even tried renaming the list but the screen still shows a calendar list. Did not understand by using which list the screen is displaying the Calendar List.

User menu is set to My CRM-> Calendar List -> Responsive Calendar List also.