Seems like mixer is not working, i got confirmed btc transaction since about 4h but the website still say: "Waiting for confirmed transaction"
Any update from support?
Copy the token and deposit address you were given and ensure they're backed up somewhere and hit refresh if you haven't already as sometimes noscript blocks it and it could be accidentally turned on by a lot of browsers (and intentionally by tor and firefox).
If that doesn't fix it, message support and keep yourself preoccupied while you wait for a reply in a few hours/days.