Problem solved. The best mixer! Love you!

Hello again.
At the beginning I thought there is just small problem with my vouchers but now I think that your server has been hacked when I was using your service as well. It is strange, because there was a SSL on the site and your system recognized my two deposits. I had no problems with changing addresses as well. The delay between deposits was about 8-9 hours. I did not send them at the same time.
At the beginning, I have changed first deposit to the voucher but when I tried to use it, there was no message (no info if the voucher has been approved or rejected). Surely it was not approved, because I had no funds in the second step. And I misunderstood that I need to wait few hours (it was about sweeping). So I thought it is normal situation so I decided to waited a bit longer.
Second deposit has been made later. I got voucher and this voucher worked. But what is strange - this voucher changed its code. At the beginning it was XYZ and when I tried to write it down again, new voucher has been generated. The old one did not work anymore but the new one worked.
But the voucher of the first deposit still did not work and I got information that it is invalid or already redeemed. I thought that maybe the same situation happened - that the voucher changed it's code to the new one and old voucher code (which I saved) was invalid.
So when I saw information that it is already used I decided to contact you. I wanted to use both vouchers same time to be able to merge them and get less outputs (bigger chips).
Yesterday I did not understand your mail and tried to get private keys of the second deposit. Unfortunately they have been withdrawn already so either it was hack or you transfered them to avoid hack. I do not know. But still do not know what is about the first deposit. I have never know the private keys of it, because I could not use the voucher and later I got info that it was already redeemed or invalid.
I have no idea what to do now. If it was hack on the server or if it was internal transfer to avoid hack maybe? The amount was not small (0.4+ BTC) which was almost all of my BTC holdings and almost all of my savings. I have no clue what to do now. I have sent you a mail as well but you did not read it yet so I thought you will read forum faster than mail. I think I explained here everything now. Or at least I tried to explain everything and every step.
Waiting for your reply. I hope you are able to help in this situation. Best regards!

@ChipMixer
Please check email inbox. I have problem with my vouchers. On the site I get error that this voucher is invalid or has been redeemed even if I did not use it yet. Details are sent to your email but looks like you did not check it yet.
I was using your service few times and everything was perfect but this time I had to use voucher (for the first time) and the problem occurred. Hope you are able to help.