Hi, i am wondering if it is possible to configure nop commerce to only allow customers that have purchased the product to leave a review. i know this would be possible if i was to edit the code for the site but i am wondering if i can configure anything in the admin area?
You can set catalogsettings.productreviewpossibleonlyafterpurchasing configuration value to be True. You can change configuration values on https://<site>/Admin/Setting/AllSettings page.