modify my mobile menu + change language of post info/date + remove the chat plugin

I need you to make the mobile menu on the blog looking the same than the mobile menu all over the site.
See attached.

There is a chat plugin called tidio that I dont have anymore in the plugin but appear in frontend. I want you to remove it.

Post info and date are in english. I want them in french only.

Site is https://vecteurenergie.fr/