In RepU, open your widget, choose the carousel, then click Copy next to the embed snippet.
In your 123 Reg Website Builder, open the page where you want your reviews. Click Add Section, choose HTML, and paste your code into the Custom Code box.
Click Publish, then open the live page to see your review carousel.
Check your live page in a private window, not the editor or preview. A domain-locked widget only shows on your own domain.
If the carousel looks cut off, make the HTML section taller. If it still does not show, contact us and we will help you test it.