Hello. Gave up after reading the thread, but gladly this has been resolved.
The Bitmixer support team sent me a mail which is "Sorry again for the issue, all admins were on vacations. I've transferred 30 + 5 btc as a compensation. Thank you.".
They gave me a happy new year present

Thank you.
Daaamn, 5 BTC extra for nothing? Why hasn't someone else tried it yet? Seems like easy free money to me
A very happy ending, that's great!

I am going to *guess* that bitmixer is subject to attacks/scams of various sorts. I do not know that though.
I have learned (the hard way) that you must be careful and deliberative when dealing with Bitcoin. And to follow directions! It's easy to mess up, even when you have some experience.