Yes, you can easily restart and reset Instagram to fix the app not working issue. Here’s how to do that on Android: Click on Reset Apps shortcut on the bottom-left corner of your home screen. ou’ll see all apps sliding to the left, running in the background. Locate Instagram and swipe upward to close it. For iPhone, swipe up from the bottom of your home screen to find the apps running in the background. Then, locate Instagram and swipe upward to close it. Then you can try opening Instagram to see if it’s working again. Alternatively, you can uninstall and reinstall the app for resetting.