I tried Bogo everal times, the older versions didn't work for me, or I couldn't find all the settings.
Now I gave it one more try because I've had it with Google translate crappy plugins, and it all works! I'm almost done translating my complete site (a lot of work), but the way Bogo is build it is as solid as a rock.
Menu translation is done by apointing translated menu items, you can let the menu item to a specific language with a check box. Something you realy have to know, it took me some time to find it. That brings me to the following.
A short manual is in place for this plugin. It will realy prevent users to step out and look for another solution. Pitty, becuase it's a great plugin.
Elementor is a great pagebuilder. It's very pity that this plugin seems not be compatible with Elementor.
The language switcher is a static list version with no extra options.
Maybe it's made only for standard WordPress websites without more layout extensions...?
I miss really more modern layout possibilities.