Syncronize languages for portfolio entries

Hi!

I am using Polylang on my website (created based on a theme by Colorlib) and it has the jetpack portfolio option activated and in use.
Now my question:
When there are portfolio entries that are only available in one language, on the other language pages they don′t appear.

Is there any possibility to show portfolio entries on all the language pages in a default language if there is no translation available?

For if it helps, my web is: https://www.annaschimpf.com

Thanks a lot!

Anna