Just a little suggestion, it would be great if You add "Onegaishimasu" and "Makemashita" buttons at the bottom of a chat window.
We talked about this a few months ago. To quote myself:
If we add "yoroshiku onegaishimasu" for example it could (eventually) be considered bad manner to not greet for every game. In lichess, not sending anything in chat is not considered bad manner. Probably a good idea to keep the same etiquette for lishogi.