Yes, we have had a very busy day mixing and run out of chips. We are refilling, so if you have voucher you can redeem it now. If you have sent us an e-mail, check for reply. If you still have a problem or cannot redeem voucher, please send us an e-mail.
Looks like there is a whole lot of demand for this service in the last days, which explains why there aren't any chips available at this point to withdraw. I am quite sure that ChipMixer is well aware of this and is doing everything to refill their chip pool to start allowing people to withdraw chips again. It's a bit annoying for people having to wait, especially if you're in a hurry to settle whatever transaction, but it shows that this service is experiencing actual usage, and that is a good thing. Perhaps an idea to show an actual live pool value statistic to make people aware of how many coins there are ready to be withdrawn? It doesn't have to be an exact figure, but something in the range of [+250BTC available] would be a great and helpful indicator.