It just works!

Once I had understood how to link 2 languages through the plugin, each article needing to be written prior to be able to do it, then it worked flawlessly, and had been working that smooth since I installed it.
I do use plugins to disable Gutenberg, on multi-sites (some with subsites and some with sub-domains), and even so, it works without a hickup. (I do not activate it for the whole network, however, only where it is needed).