Do you need to modify one of your already published articles? No worry: here is how to proceed.
Click on the BLOG icon (represented by the letter "b") at the left of the editor and click the ACCESS THE BLOG button.
Once on your blog manager, click on the pen icon located right of your article or click on your article's title.
You will then access the article manager. Make all the desired modifications, and remember to click on the Publish button located at the top right to publish the edited version.
If you do not publish your modified text, a notification will appear at the top to remind you that there are modifications that are not published on this text.