If you currently not using a service worker resulting in old production caches being used and users not getting new versions of the app.
src/index.js
Use:
import { unregister as unregisterServiceWorker } from './registerServiceWorker'
unregisterServiceWorker();
Instead of:
import registerServiceWorker from './registerServiceWorker'
registerServiceWorker();
In case it still gives issues, you can add these two meta tags in public/index.html: