One of the Black Hole versions had the WiFi option in a different menu, from the network menu, you will need to check the menu options. There was also a problem with certain symbols, in a WiFi password.
I use Open Black Hole, and a cable connection, so I can't remember the Black Hole menu, especially in an older version. During the initial installation, you get the option of wireless or wired, so if you decide to flash the latest Black Hole, you should have the option on setup.