Permissions or parsing issue for anonymous users

Problem/Motivation

I'm running dxpr builder 2.6.0 on drupal 10.3.12. As an admin I can create and see any dxpr content, but when logging out and visiting the site as anonymous user the dxpr content doesn't get properly parsed and I get the dxpr content rendered as html code. I tried to tweak with the permissions for anonymous users, but nothing I can think of seems to work. Pages created without dxpr are showing all fine. I'm not using the dxpr theme (since I've implemented dxpr on an drupal openculturas profile, needing the openculturas theme for other content to work properly). Yet, when I switch to the dxpr theme to view the dxpr content, it still doesn't show. So it's obviously not theme-related. I do admit that I haven't been using drupal in the last 5 years, so I may be making a rookie mistake here... Hope someone can help out

Steps to reproduce

the site under construction is currently live on HTTP://www.heap.hk/heapv1/web/home. As you'll see, you will only see the dxpr content parsed as HTML code. I can give temporary admin credentials to anyone who wants to delve in deeper.