When you edit a page or post, you can click on the Acrolinx button at the top of the page to open the Sidebar.
The Acrolinx button isn’t visible in full screen mode. To check your content with the Acrolinx Sidebar, you'll need to exit full screen mode.
If you've set your interface language to English, German, French, Japanese, or Swedish, then the Sidebar will also appear in that language. For all other languages, the Sidebar will appear in English.
To change the WordPress interface language, follow these steps:
Go to Settings > General.
Choose your preferred language from the Site Language dropdown.
Save your changes.
You can also change the Sidebar language directly in the Sidebar. Click the User Profile in the slide-out menu of the Sidebar and then ADVANCED to get to the settings.