I had the same problem about a year ago. I ordered a Dingoo a380, heard about all the health problems and had a couple of emails saying it would be shipping soon. After 3 months of this I got fed up and since it was passed 45 days paypal would not do anything, so I contacted my credit card company and luckily was able to get a refund through them. I had ordered a dingoo a320 from him previously with no problem at all, so not sure what happened. With the amount of places you can order these systems now, I would never order from him again.
Once I heard he was involved with the GCW I decided to get out. I will wait until people receive theirs and see some reviews before I consider purchasing it.