I did some coaching on that site a fortnight or so ago - the early teenage son of a friend. We played a game and then analysed it.. it’s a very long time since I had been on that site. It remembered who I was and I found my password. There seems to be some kind of analysis engine to help you rate your games which there never was about 15 years ago when I used it a lot. There were several moves in the game in which it suggested improvements for me.
I won the game, but I was extremely rusty. It’s 16 years since I played a competitive game.