I feel your pain. I'm Canadian and I was in the same boat a while ago. No response from BitSyncom / Yifu until I called him out about my specific order.
BitSyncom / Yifu please help this guy out, and get him some answers please.
How'd you call him out?
By creating my own topic like melmo with my early order number. Those were shitty days. I hope you guys get your units soon.