It's full of Tweaks ^^
It's 1.80.709.1 Base with devsk modified Ex Kernel v10 and systemless Xposed.
That's why I asked if WiFi Band Settings can be changed in ROM or if they're fix in Baseband or Kernel.
Except the Band I can't imagine any reason 3 other Android, an I Phone and a Lumia can connect to this Network which is invisible for me ^^
When you look for a WiFi connection you can't tell to which band you can connect.
It only shows you the SSID when allowed by the WiFi source or router.
Only after you are connected to a WiFi source you can see (in WiFi settings / more settings) to which band but not the channel. The channel is determined by the WiFi source (can be your router @home).
Why your -10- can't see that WiFi network you want to connect to it is possible that the SSID is hidden so it is invisible for you.