Hello,

We have added a sample Review with Image on your Site while your third party Plugins are deactivated and it worked fine no 404 page redirection: https://snipboard.io/z0pCB6.jpg

This was the Product on which we tried the Review: Eames lounge chair

So, might be one of your third party Plugins is causing the conflict in this regard.

Try reactivating them one by one to find out which is causing the conflict.

Best Regards