I'm from Vendio. Can you call me or drop me at email at email@example.com, 650-293-3557?
We have a section under the marketplace tab that we show why a scheduled item was not launched. I can't diagnose on a forum, as the reasons are pretty diverse (having the word word "money order" in a listing, or having duplicate listings or a BIN price too close to the auction price).
We have excellent customer support, so if you don't want to reach out to me, you can log in and contact your rep.