StoryChief will work with the built-in spelling and grammar checks of your web browser.
If you use Grammarly:
Due to the technology that powers our editor not being supported by Grammarly, it is not possible to use their browser extension.
Disabling it will allow you to use your browser's built-in checks.
If you use Ginger:
You will probably see strange things in the editor, such as this example.
This is caused by the Ginger spelling checker.
If you disable Ginger, StoryChief will work correctly