Rep fully integrates with Yotpo. Once your Rep account is connected to your Yotpo account, Rep will be able to tell your customers what's the average rating of products, and also show them recent reviews posted by customers using Yotpo.
To begin, go to Settings > Integrations and click Add Integration. On the next screen, select Yotpo and click on Connect. Log in to your Yotpo account (if you aren't already logged in) and provide Rep with access to your Yotpo account.
All done - you are connected to Yotpo.