Please register the account to which your earnings will be transferred, then contact the FANBOX.
Set your transfer account here
Contact us here
Please consult the following page concerning expired earnings.
■ Do my earnings expire?
https://fanbox.pixiv.help/hc/articles/4416459864601
■ FANBOX Terms of Use Article 15: Direct Deposit Request, Item 10
https://policies.pixiv.net/#fanbox