Website translation messed-up. Plug-in WPML translator specialist able to delete unwanted languages and restore the needed.

my website https://www.bei-lin-da.cn originally had 5 languages, after deleting RU-ES the remaining IT-EN-CN on the back end Elementor editor appears all messed up. The front-end pages seem ok, not the back end.
The target is to restore EN-CN-IT in order.
Screenshots: https://www.prandelliweb.com/2022/06/16/wpml/