A hard refresh is a way of clearing the cache of your browser and forcing it to download all the latest versions of web pages and files stored on your computer. This can help when pages or files appear to be out of date or when changes to a website are not appearing as expected. After connecting your wallet, a hard refresh can help ensure that all the latest updates are being displayed correctly. To do a hard refresh, you can press the Ctrl + F5 keys on Windows or Command + Shift + R on a Mac.