In RepU, open your widget and click Copy next to the embed snippet.
In Webflow, open Site settings and choose Custom code. Paste your code into the Footer code box, then click Save changes.
Click Publish, then Publish to selected domains. Open your live site to see your Google reviews.
Check your live site in a private window, not the Webflow Designer. A domain-locked widget only shows on your own domain, not your webflow.io address.
Custom code needs a paid Site or Workspace plan. If you are on the free Starter plan, upgrade, then check again.