I have setup More Good Reviews on one of my client sites, and have another account that I bought for good measure. The display is pretty good, but I would like to see a little more display control on the review landing page. That said, it's perfectly functional. The other issue I had was with adding the CNAME to have a custom domain. We use cloudflare for DNS, and they are also using cloudflare as well, which doesn't seem to work. The CNAME integration is still pending.

The Proxy is already turned off in cloudflare, and the error is still happening.