Community polls issues

Hello and congratulations for a very nice and useful component.

I ve installed it, but i have some issues i' m struggling with.

1. Although i set in configuration "categories show:NO" the categories are displayed.

2. In some cases, i cant defines which ones, I cannot see the results. I see only poll titles.

3. The graphs: no matter i choosed the default joomla one or the Pie, I see no difference.

4. Is there a way to have not 1 poll per row but 2 columns for displaying 2 polls per row?

Thanks in advance for any help.