I've had a RPi 3B for years used for something else and wanted an Octoprint server so I got the 4B (2gb). Set it up like everyone prescribes, properly formatted the supplicant file with NP++, hooked it all up and it does not get recognized by my router. I got into my router's settings and the Pi does not show up. (Don't have micro hdmi atm to plug into a monitor)
So on a whim I figured I'd try throwing the SD card into the 3B. Not only did it immediately connect to my router, it also turned on my printer.
Am I a dumb chimp or did I just not stumble across something somewhere stating that the 4B isn't compatible? Do I need to use the 0.18rc instead?