It is not that people don't want to help you but your questions are "offtopic."
It could be an issue with reaver, with your card, with your system configuration or with the access point... etc.
But for sure it has nothing to do with pixiewps : pixiewps needs that you collect the needed strings properly or ti cannot make the brute force of the M3.
How to get the M3 to brute force it with it "authkey" is another question, another subject
Cheers