Keeping that aside for a moment, we do not know if the problem is a withdrawal issue is down to signature campaign participants trying to withdraw funds or whether clients using the website for mixing are sending funds but are getting nothing back. There do not seem to be claims of the latter therefore it could be confined to signature campaign participants only. It still would not make it right or acceptable of-course but it would narrow the problem.
I'm a customer. I made a small deposit this morning and still haven't received anything back (with 0 hours delay on withdrawal).

I made the rookie mistake of not checking this thread earlier. I assumed everything was fine with the service. Maybe it's worth considering a temporary pause on the signature campaign and taking down all the signatures until things get sorted. If things work out, no harm done, but just in case they might pull an exit scam, it's better to stop the promotion sooner rather than later.