Strange issue, but S2Member users will be familiar with adding new users manually on the wordpress dash. When you do, you can click this “show password” button, and a field appears below it, where you can insert new passwords. All the sudden today, nothing happens when pressing the button. It does the “press/depress” effect, but no text field. Any suggestions?
"Show Password" button stopped functioning on "Add New User" page
That sounds like a javascript issue. Try debugging using the browser console (right-click and choose Inspect Element or hit F12).