As developer has written in recent reviews

"We believe this is an issue related to being unsubscribed to our primary filter list, EasyList. To enable EasyList, please click the AdBlock button in the browser toolbar and select Options. On the Filter lists tab, select "EasyList".

I did exactly as written and it has worked. So I recommend every one who has said issues give this an attempt before totally giving up.

Also, thank you to developer for informing about this.