I am on an interview waiver and I got a notification to send documents to the US embassy here in London. I have sent the documents 2 weeks ago and it’s still saying the same thing. The tracking from DX says it’s been delivered but I got no updates from the embassy https://showbox.bio/ https://tutuapp.uno/ . How long does it take for the embassy to acknowledge the documents or should I be worried that they aren’t delivered?