Plugin Better Tag Cloud doesn't seem to be activated

Hi,
Activated the plugin, reviewed the settings, copied the css into my own css stylesheet, added !important next to the css styling but can’t see the change on my site. Plugin doesn’t seem to have been activated.

What did I miss? What should I look for?

Thanks in advance for your assistance.

https://www.ads-software.com/extend/plugins/nktagcloud/