Cannot deposit

I cannot deposit after deposit and trade for just five days. I contact customer service many times and it has not been solved. Later, it said that I have a failed KYC. Why did they ask for proof when I opened account? I trade normally everyday. Do you want me to lose all the money that I have made to the point, until I have lost all of my money? It is too irresponsible and I ask what this risk is certified for, but they do not answer.