HELP! Account was lost (JP)

My nox emulator just wiped all my apps off it when I started it up and I was wondering if anyone can help me get it back I have the ID 760305507 but never got to back it up or get the ID and password to it, if anyone can help it would be great! Please!

Update: Got to the site but can't get this one トレクルを最後にプレイにした機種名 it doesn't translate very well if anyone can tell me what it is that would be great!