Important: Popup not appearing for the 2nd time.

This plugin is great, I can do any implementation stage I need.

However there seems to be an unexpected bug. When we open a new post with a pop up, it automatically shows up and it looks great. When we close the post, then open another post, the post doesn’t appear at all, this is strange, the pop up doesn’t appear.

You can see it directly at my URL: iqbalmauludy.com

I take short video to show what happen:
https://www.loom.com/share/7edeae772cbb4bb0b44e6bc009b3fd10

The page I need help with: [log in to see the link]