If Ctrl+C and/or Ctrl+V have stopped working for you, then I would recommend checking your Windows settings. There are no CommCareHQ settings for activating or changing the copy/paste behavior.
The context menu (right-click menu) does not show a useful "Copy" action for performing copy/paste in this situation, that is why we recommend using the keyboard shortcuts. If keyboard shortcuts are not working in your browser, you may be able to find alternative copy/paste buttons under the "3 dots icon" menu in Chrome. I am unfamiliar with Microsoft Edge, hopefully there is a similar menu in that browser also.