Please do or check either of the following if the Adhoc reports are not returning any data.
1. Re-Create the reporting database (if the button is displayed).
2. Synch the Applicant/Reviewer data.
3. Check if any Adhoc report field is excluded or deleted from the application.
4. If there are any scorecard fields added under the report, remove those fields, save the report, and add it again.
If still, your concern doesn't resolve, then please submit a request to our support team.