In RepU, open your widget and click Copy next to the embed snippet.
In Weebly, open Settings, then SEO. Paste your code into the Footer Code box and click Save.
Click Publish in the top right, then open your live site to see your Google reviews.
Check your live site in a private window, not the Weebly editor. A domain-locked widget only shows on your own domain, not your weebly.com address.
Pasted it into Header Code by mistake? Move it to Footer Code, then publish and check again.