Title not showing in CPT

Hello, I copied some CPT to move to another CPT. Unfortunately it seems that the title doesn’t show in the index afterwards. At attached link you can see two identical articles. The one with title has been made by hand to check if it works. The one without title was copied from another CPT.

Do you have any idea what to do about this?

I already tried two different duplicate plugins (Duplicate Page and Yoast Duplicate posts)

Thanks in advance!
Marjon

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