I think WPML look sot link in content and allows you to edit/translate them. Normal gutenberg links work ok, but the GB pro container links dont seem to be picked up by wpml. more testing needed but for the mean time i’m having to change from container GB pro links to regular element links.
I am not very well versed in how WPML works. But the Container links won’t render in the editor, but they are saved in the post content so WPML should be able to see them. Could you ask their support to take a look ?