As a matter of fact the investor came to our public chat to discuss his concerns and that it was witnessed by many other members. The reason behind the investors statements: Privacy concerns
If this is something you need help with, I'd be happy to offer my assistance. I would be able to waive the typical 1% fee on our cold address service (that will guarantee you get unrelated coins back) for the first 300 BTC. If your major investor is concerned about privacy, I would advice that you do mix the coins sooner rather than later as if you have a big withdrawal you will likely need to source his investment to pay for it.