I am unable to view people’s attached images after completing form

To clarify, are you trying to view the submissions in your submission page or in the email?

May we know the error message you receive once you view the uploaded files?

Kindly try to login to your account and view the uploaded files in your submission page.

https://www.jotform.com/help/269-How-to-View-Form-Submissions

Let us know how it goes.