So spend many hours again troubleshooting. Things I've tried:
Install previous IDE version(from 2018) on new PC, reloaded all driver etc
Used the exact same ESP8266MOD board and drivers as stated in tutorial
Tried previous Brewbench builds ie v4.1.0 all the way to v4.2.0
Used an LED on D1/D2 ports to see if it lights up and communicates
Installed a simple sketch to confirm D1,D2 ports are working via webserver/URL(tested 100%)
Not too sure what else to try other than buying an Arduino Yun.