"During that instability none of my orders went through. Even the sell orders for a flash crash's of today. Is it possible to hold them liable for that?"
My buy "market" order @705 that i placed on 20th of june @9:18 pm was not executed till early morning of june 21st, essentially after 11% decline. Not only that, the orders were not even visible nor had i access to cancel them till tuesday morning around 10 am. The site is a total fucking scam.