Is Post Grid plugin still functional?

Hello,

We've been using your Post Grid Pro plugin for years, but it seems the plugin does not work correctly anymore. If I want to create a new post grid, no matter which post types I use in the query, or what view type of grid I want to generate, on the frontend it always show "no post found".

The post grid I created years ago still works correctly, but if I try to just edit it (and save), it works no more so I have to restore a full backup of the website just to have post grid showing correctly on the frontend. Page where the grid is used is https://staging2.builcore.com/projects/

So, can you tell me what is going on, and how to have functional Post Grid again.

Thanks,