Jevelin error Empty Front Page Translation

I am using WordPress 4.9.6 running Jevelin theme Version: 3.0.3 and the Polylang plugin Version 2.3.7. It worked with no problems with many posts and categories. Since yesterday I am unable to use Polylang anymore ONLY in my Front Page

The workflow is: as usual, I create a post in the first language, then the pair in second language, both using the jevelin visual page builder. I check the post everything is Ok. Then if I link the two post with Polylang (e,g. from the post in the first language) the post in the second language becomes empty. If I open with “edit” the post in the second language, it is actually empty in the editor. Tried with many new posts with no success. I can recover the content from the post revisions but when I update, the same “empty issue” appears in the post in the other language.

I need your help 🙁

Best

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