I had my luck yesterday and I was able to crack with dictionary attack with rockyou.txt
Others were cracked pixie dust using Wifite
Rest are still in progress.
VMR-MDK and Revd3k-r3 and Varmascan doesn't work and no hopes.
I'm also using default WPS PIN of the router manufacturer and model. It works sometimes
with default PIN (-p on reaver)
Still testing, will keep updated