Hi Prem,
could you please check the timezone settings of the user - is this one user in the same timezone as the others? It may appear that due to different settings of the user time zone the survey validity is not converted properly into the user time zone.
Please make sure to have the following notes implemented in your system:
1823109 - Survey not showing because of daylight saving time.
--> https://service.sap.com/sap/support/notes/1823109
1913637 - Survey is not appearing on the screen.
--> https://service.sap.com/sap/support/notes/1913637
It may also appear that the issue is occuring due to wrong time zone settings. Please consider the following sap notes:
741734 - Incorrect times due to the time zone settings --> https://service.sap.com/sap/support/notes/741734
481835 Analyzing the time zone settings -->
https://service.sap.com/sap/support/notes/481835
I hope the suggestions help to solve the issue.
best regards,
Johannes