I placed order for UMIDIGI Z2 and I paid money through paypal. I received confirmation from paypal and dx.com. Next day they asking me to send copy of ID, credit card and login paypal account page and transactions in paypal. I sent paypal receipt, ID and credit card detail, they cancelled my order saying that it failed payment verification. I thought may be I did something wrong, so I placed second order, this time they issued refund without any verification step, so I opened a ticket to resolve issue. Customer service person said, there is payment blocked in their system. You can transfer money to bank account directly and provided bank details. I have never seen like this before on any other site. Looks like fraud. Now, I am worried about my credit card photo and ID information submitted on 1st order. Hope it will not be used for any fraud or identity theft.