To create a Review filter, please follow these steps.
(Please note: You need to enable integration with one of the review apps before creating a Review Filter)
Go to your Shopify Admin Store > App > Searchly.
Click on Filters and select Manage Filters.
Click on Add New Filter.

dd Title, select Page & select option from the dropdown (Product Reviews) then click Save.

Run data sync by clicking Data Sync.
