I have been doing a lot of research on products reviews for a couple of days. In most cases i can use Zapier and Integromat. But one thing we really neeed is access to order and product (collections) in several places so we can refer to it in the check out and order confirmation pages.
I would love to have some kind of more open access to the collections, It can be set to read only
I have been playing with YOTPO, Stamped.io and Trustpilot
I have also implemented ProveSource to read and display reviews and other information.
You can se how it works as this site https://www.excellentskin.se