screen shots do not save to my Mac. They disappear since I updated a few days ago. Any Help?

Saving the screen shots depends on what you have set for it. Press the cmnd+shift+5 keys on your keyboard. Then click on the Options menu in the control bar the appears, and make sure its set to save the screen shots somewhere you can find them.

Press the escape key when you're done setting the location.

Are you clicking on done? If you don’t do that they go away.