Flags do not appear with elementor widget on wordpress.com

I use Polylang plugin and when I want to add the elemntor widget “langage switcher” it’s all good but when I want to dipslay flags, they appear on my working page (elemntor/wordpress) but not on live site.
Elementor told me this is a 3rd party addon widget not made by them and they cannot provide support to it.
So if you can help…

And I am using wordpress.com and not .org so I cannot change the flags on the root file…

Thanks a lot,

Julie