WiFi on RASPI
WIFI is not a function of the app_rpt/ASL software. It is at operating system level.
4B
In order to connect to your ASL Node with a Raspberry Pi 4B using WiFi, you must use the command: "Sudo wifi-setup" at the command prompt. You will see further information and just follow the directions as you add requested information (SSID and router password). Once completed, reboot at the command prompt (Use "Sudo reboot").
Other Pi's
See the Raspi documentation https://www.raspberrypi.com/documentation/computers/configuration.html#wireless-networking-command-line