WARNING: FOX.EXCHANGE IS A SCAM

At first, they will process your smaller trades to gain your trust. Then when you deposit a bigger amount, they will ask for mandatory "KYC" and steal your coins for themselves. This is a common tactic by scammy exchanges.

What happened to me:
I have been successfully trading with them the past few days. They processed 50+ transactions for me.
Proof of successful trades:

Then I decided to increase the coins to be exchanged. I received en email from them saying that my order is suspicious. Really? After 50+ successful transactions, now they think my order is suspicious? Or is it because the coins I sent them is bigger this time and they want to steal it and keep for themselves?

Their "KYC" email:

I told them that I am not willing to send them my private documents and just refund my coins back if they do not want to process my transaction.
Proof:

Also fox.exchange owner post saying NO KYC: https://bitcointalk.org/index.php?topic=5104721.msg49528687#msg49528687

I only trusted them because they are being monitored at bestchange site. I do not trust them with my private documents. I hope bestchange admin will remove this scammer from their website to save other people from getting scammed.

WARNING: FOX.EXCHANGE IS A SCAM

I will update this post if they do the right thing, and refund my coins or process my transaction.