I found this on older version WordPress dashboard, hope it helps!
Not quite ready?
=================
The new editor will be enabled by default in the next major release of WordPress. If you’re not sure how compatible your current themes and plugins are, we’ve got you covered. Install the Classic Editor plugin to keep using the current editor until you’re ready to make the switch.
https://ww.wp.xz.cn/plugins/classic-editor/
I found this on the older version WordPress dashboard, hope it helps!
Not quite ready?
=================
The new editor will be enabled by default in the next major release of WordPress. If you’re not sure how compatible your current themes and plugins are, we’ve got you covered. Install the Classic Editor plugin to keep using the current editor until you’re ready to make the switch.
https://ww.wp.xz.cn/plugins/classic-editor/