The problem was solved by the last update. V1.7.4 came out and fix the va6 issue.
Update the firmware to 1.7.4 or Dolphin machine and update also the Xhorse app.
Just cut a VA6 I decoded the key Q-H then cut as normal.
so I tried again with the same key but this time I noticed a new item in the menu just before you click cut (See Photo)
I ticked this and cut the key again (you have to tick it on both cuts)
Put it in the lock and it worked.
on the 2nd cut it took a fraction more off one side and the back end of the key
But it worked in the lock.