Weird situation. Consider this is a fake accusation [I am not saying it is fake] the mixer representative has no way to defend their service. Anyway, an scam accusation is not a promotion but a warning. Theymos also did not give a clear explanation about scam accusations I think, did he?
I think if the topic has some relevance and is worth discussing but not a promotion for the use of mixer, then it's alright to talk about mixers. If I recall, it's not allowed to recommend or give out a recommendation for mixers to use so I think Scam Accusations of mixers that are doing something is probably not on the alley of being a bad topic to talk about, regards to clear explanation, we can probably just infer.
I'm wondering how you were able to send about 30,000-40,000 USD to a site that I had never dealt with before or had the necessary trust? It's weird !!!
Maybe OP's got some kind of experience with using it that they've been too trusting that there's no scammer mixer out there and that money isn't that much for OP or something like that, I'm just throwing out potential reasons here, that don't that these are all true, maybe OP is just unlucky and YoMix is really a bad mixer service, feels bad that they can't defend themselves here.