Not working for date displays?

Problem/Motivation

I have created a display of events with start and end dates using the date module and views.
Some events are ONGOING.
So I was trying to use this module that I could enter specific end date (Jan 1 2030) and then use the module to override this date only to show ONGOING. In the event displays I am using the full date, i.e. Tuesday, January 1, 2030.
The string override is not "taking".

Steps to reproduce

Install module
add string override for the final display format of the date to override, (Tuesday, January 1, 2030).
Flush caches multiple times.
Day still showing as Tuesday, January 1, 2030
Checked to make sure there are no extra spaces in the string to override.
Checked code and see no string override.

Is this something to do with the date module itself?
Any suggestions