In the options bar, you will find three items: File, Edit, View.
The first item is Create New Article, which allows you to create an article from scratch. Before selecting this option, remember to export the article in Word format by clicking on the Export button, otherwise, you will lose all the changes.
You can also export your article, save it on your WordPress site, import the article from a file, rename it and, with Open the SEO configuration, you can add new keywords, or restart the configuration from scratch.
With Modify Optimization, you can modify the keywords (main and secondary) you have chosen. If you choose Article or Snippet instead, you can switch to the respective editors.
Here you can choose to show or hide the two sidebars: Keyword/Images on the left, SEO/Words on the right.