Can't get local wifi ip to work

So I am using a raspi 3 b+ and downloaded the latest Astroprint image. I used Etcher to burn it to my micro sd. My problem is I can’t seem to get my network to recognize the ‘astrobox’. When I use Angry Ip Scanner it doesn’t bring up any ip address. It just wont recognize it at all. I’ve tried with and without the wifi dongle (im using the one recommended) with no luck. Interestingly however, if I connect through ethernet I get a local ip and astroprint comes up when I type the ip in my browser. I’ve also tried formatting and reinstalling the astrobox image.

Have you tried this method for connecting to the WiFi: