How to Fix Dolphin XP008 Fail to Cut Flat Key?
One customer gave feedback that
Dolphin XP008 did not support his key. His key looks the same as the supported one that should be cut by side C.

Here is the
Reason:
His key is flat key, which is different from bit key.
Solution:
Use
XP007 Machine, or
Xhorse Automatic Machines.