What is the proper way to submit a support ticket to Bitmain about this device?
Yes go to their site:
https://bitmain.zendesk.com/hc/en-us/ or might use email if in China.
What kinda issue do you have?
Like i said in my review, board 1 gets dropped regularly, then get picked back up. But its 10-20% hashrate loss in that given hour if it does. I don't know if its precursor to a bigger problem or what.