If u check ur email and u didn't find anything then u call nvc on their phone line they will solve the issue with u on the phone because it happens to one of my friend, he been waiting for welcome letter getting to four months so when he call nvc they told him that they said it already so the later find out that my friend email is not correct that's why he didn't receive the welcome latter so when calling them try call early morning working hour so they will speak with u.