Of course I know, it's hard to trust somebody and it is very good to be careful. We guarantee, you will get your mixed coins back! Just try and see yourself. The minimum mixing amount is 0.001BTC.
At the start of our new business, we want you to give us trust and make you convinced of our service. Therefore, we want to give you, the users of bitcointalk, an exclusive discount code.
You didn't explain how mixing actually works in your service, and FAQ page on your website has only minimal information.
I appreciate the discount you have for bitcointalk members, but I see that you are using Cloudflare and I don't consider this to be good practice for mixing service to have.