alexlee: That looks like a Chinese, Japanese or similar language version with charset that is not installed no his computer. Clicking the small English flag at the right column (and confirming) should help.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)