Polylang and static Startpage

Hi There, I am New on here.
I run a Site with Theme Avada (wich is great btw) and try to get it Multi-Lingual.
I did that once with Polylang, works like a charm.
It was (was) possible to choose one static Startpage per language – so as it is with the Menus.
This is not longer possible, i can choose all Menus (up to 8 in Avada) but only on static Startpage. That is hmmm …
So neither a click on a language Flag nor the automatic Language selection (by reading out the Browserlanguage) shows a translatet Startpage.

Could this be hacked? I am affine to php, html and CSS. Thank you a lot!