Why do Reports suddenly not show results?

Summary:

We have weekly reports accessible on out Supervisors Navigation that suddenly are NOT showing results. I've made a copy of the Profile and can access these reports on my side using it ( although they do take awhile to run)

Content (please ensure you mask any confidential information):

We have

Version (include the version you are using, if applicable):

25d .net version

Code Snippet (add any code snippets that support your topic, if applicable):