I have the M1 Mac Mini and also can confirm EyeTV 4 does run.
But seems like a downgrade
the on screen remote is gone;
the quick channel selector menu which use to overlay the image has disappeared ; so I have to manually scroll through channels with + and -
Sometimes channels will display in a squashed 4:3 ratio so I would have to close the window and reconnect which usually fixes the aspect ratio back to 16:9
It will frequently randomly start recording a channel?
it’s a shame because the previous version was basically perfect
I hope the developers don’t give up on updates!