When we are login in PA using viewer license, user is not able to see the available slicers in the presentations. Please confirm what all the limitations with Viewer license.

Using these permission, user is not able to see the reports and slicer value correctly and it is showing data source connectivity issue. Though user is having full access on the cube from which this report is populating.

After assigning the same user as ‘Professional’ license, user can see the report and slicer values. Just to remember that there are no changes done on the cube level permission.