In RepU, open your widget, choose light or dark and left or right, then click Copy next to the embed snippet.
In Big Cartel, open Shop designer, then the Code tab. Choose Integration Code, paste your code into the Body box, and click Done.
Need more detail? See the official Big Cartel guide.
Click Publish in Shop designer, then open your live site to see your Google reviews. Clicking Exit saves without publishing.
Check your live site in a private window, not the editor or preview. A domain-locked widget only shows on your own domain.
Make sure you clicked Publish, not Exit. Integration Code is not available on the free Gold plan.