Hi there,
It looks like this issue has come up before but I don’t see recent posts about it nor a solution on my end, so just wondering if there’s another back-end issue with the Google Reviews widget. I had it working properly for a few days on my Wix Studio site and now it has disappeared completely and I can’t add it back to the site, nothing shows up when I do.
Thank you
Hi there and welcome to the Community 
I am really sorry about this inconvenience!
Could you please send me a link to the page where your widget was installed? I’ll be happy to look into this for you 
Hello!
My page actually isn’t published yet so I can’t send the link yet hmmm.
In this case, to check things and find out what’s going on, we need temporary access to your website’s backend.
I’ve contacted you directly at your email address and shared the info for providing the access. Please check your inbox and reply to my message