Thread:ShinsukeNakamura/@comment-123.16.243.245-20180111140607/@comment-28242634-20180111154234

Since it's on spam message, I think gmail/yahoo auto deletes spam messages within 30 days after it is sent, especially if it's since Oct.2017, so that's why you don't see it anymore.

You could try replying

"The reply you sent was sent to spam, and unforunately it accidentally got deleted d ue to my spam  settings in my email . Can you kindly hand me another bindcode, or if that's not possible, allow me for another account recovery?"

or something like that...in Japanese of course. You can ask on reddit or discord for additional help.