我可以發email給NVC和廣州詢問嗎？

1.沒有收到他們說的I-864
The petitioner in the applicant's case has been sent instructions concerning completion of the Affidavit of Support (form I-864) and supporting documents needed for financial sponsorship. The applicant may want to contact the applicant's petitioner to ensure that these documents are completed and returned to NVC as directed.


2.這裏麵沒有提受益人的文件。交I-130的時候已經交過出生公證和結婚公證了。

3.如果我們已經讓繳納400的簽證費，（已繳納），是不是說明經濟擔保就通過了？

怎麽越想越亂了呢？