Have you tried if it can find other networks that you know are working? For example, use your phone's hotspot thing to creat a wifi, see if Ubuntu finds that, if it does, make sure the connection works. It could be that there's just no other networks in range. Though if you live in a apartment complext that would be weird indeed.
In the GUI, it doesn't find anything. The icon keeps rotating and nothing more. If I set a connection with a known SSID and password in the 01-netconf.yml file it connects. Problem is that it would not work with a web-based authentication, for example. Also, what I set up in the yml file does not appear under Saved Networks in the GUI.
I assume you've checked that the drivers are up to date?
yep
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