I was told on 29 September by highest level Beijing staff that the M1 silicon was supported.
signals
Yeah?
I got this reply:
Dear Customer,
It turns out to support M1 is for StreamFab.
DVDFab 12 is not supported yet and we do not know when it would add into support at present. 
Sorry for any inconvenience this situation has caused you. 
Sincerely yours,
Vivian Wang