You can try right now the filter plugin online. As it depends on user form submissions, not all filters will show something, which is right, because, if no data exists for current filter condition, nothing should be displayed. You can add your own submission to test everything works correctly.
For example, you can try the following simple filters with only one rule:
- Simple Line (ID:1) = test
- Simple Line (ID:1) = wordpress
[gfchartsreports gf_form_id="1" include="3" type="horizontalBar" color_set="blue" height="400px" tooltip_style="BOTH" position="center" filter="1"/]