Step 1 Click the ADD APPS button on the left side of the editor to open Wix app market and search Comments App then click ADD TO SITE.

Step 2 Click ADD APP to confirm the action.

Step 3 Double click the widget to complete the setup.

Step 4 from the popup box, navigate to the SETTINGS and scroll down and toggle on the Wix Blog Mode. Close the box.

Step 5 On the upper right corner, click the PUBLISH button
For a visual step-by-step tutorial, visit https://www.youtube.com/watch?v=vP_gb7m38W0.