1. Out of the box it comes pre-configured (as much as possible) for optimal settings. Any settings that are not optimally configured will display an information notice above the system statistics on the DragonByte SEO CP
2. Could you please go to DBSEO CP -> SEO Settings -> Tagging Settings and ensure the settings there are correct?
Could you please try turning off the Keyword Only option? If you haven't manually specified any keywords, or they don't appear in the content, then it will not be added to the tag list.