Hi,
Once you configure the columns, to enable the data on reports, you will have to enable "Day CQ DAM Event Recorder" OSGI setting in configuration manager.
1) Go to http://localhost:4502/system/console/configMgr
2) Search for "Day CQ DAM Event Recorder"
3) Check all the event types you want to capture in asset reports
4) Check enable this service and click on save
Once you follow above steps, you can go back to the reports screen and verify. You should be seeing data in reports
We hope this information helps!
Regards,
TechAspect Solutions