In RepU, open your widget, choose light or dark and left or right, then click Copy next to the embed snippet.
In your Magento admin, go to Content, then Design, then Configuration, and edit your store view. Open Other Settings, then Footer, and paste your code into Miscellaneous HTML.
Need more detail? See the official Magento guide.
Click Save Configuration and flush your cache, then open your live store to see your Google reviews.
Check your live site in a private window, not the editor or preview. A domain-locked widget only shows on your own domain.
Flush the cache after saving. If your store uses a strict Content Security Policy, allow the RepU domain.