As always Bitmain at it's finest. Bitmain and it's owners ia cancer to all Crypto scene. Miners which break down like flies, Support for BU fork and list goes on and on., Feel bad for you and all who bought any of their recent miners (S9/T9/R4/L3)
Bitmain has poor s9 and poor r4.
Can't say much about the t9 or l3 as
I do not own them.
As for the Bu fork or the segwit fork both are not so good .
And you should not bring it up in this thread.