If you find that the editor is all grayed out, this is caused by the bb code toggle button being clicked. I have done a tweak so that when the editor is good to go, the button is green. When its not, its red. You want it almost always showing green. As seen below:
(Note the colors may look different if you're not using the default dark style)
(Note the colors may look different if you're not using the default dark style)