I updated my Wordpress to version 5.0
After updating, I install "Classic Editor" plugin to replace Gutenberg.
The post editor changed to Classic Editors.
Today I received a mail my site is updating to Wordpress 5.0
My post editor became Gutenberg.
I checked the setting is Classic Editors, but it still Gutenberg.
I tried "disable Gutenberg" plugin and activated it.
No changes to my post editor, it still Gutenberg.
How to change it back to Classic Editor?