If due to a problem with your device or because you forgot to click Update, you have lost the work you had done on your post’s editing page, you can recover the content by clicking on the Browse button that you will find in the right menu of the editing page.
When you click on it, a page will appear containing various autosaved versions of your document. Clicking on Previous will display the previous version or versions on the screen. At the top you will find a bar with a circle and arrows to the right and left.
If we move the circle on the bar to the right or left we can see the different autosaved versions of our post. We select the one we are interested in and click on Restore this autosave.