How to Hack Wifi Stealing Wifi Passwords with an Evil Twin Attack

Hey there has been a post on this website that shows how to get wifi passwords with an evil twin attack.

It used a program called airgeddon.

Everything works fine except part4 of this post. I can't scan for other networks. It shows that my wireless adapter is scanning for networks but i can't seem to find them and yes it is in monitor mode. I'm using a alfa awus036ach with a realtek ar8812au chipset. Please help:D