To quickly refresh and clear the cache in Microsoft Edge, you can press Ctrl+F5.
OR
Go to the Settings option under More (triple-dot icon). Select "Privacy, search, and services", then under “Clear browsing data,” click “Choose what to clear.”
On this page, make sure “Cached images and files” as well as "Cookies and other site data" are checked, then it's possible you'll need to adjust the time range to be more than the default "Last hour." Once you've selected those, click “Clear Now.”