Can’t edit page after trying to clone it

Hello, I created a page with several conditional visibility options (one different portfolio for each month).

Everything seemed to go right but when I tried to duplicate this page I had an important issue. (I used Yoast Duplicate Post)

I created a clone of this page and I realised I could not edit any of the widgets. Not only on the cloned page but also on the original one.

Is there any bug or is there something I could do to clone and edit the widgets without any problem?

I need it because is a big web development.

Thanks