@Sasse According the the manual : My best bet is that the battery went dead. If you haven't charged the device once every 2-3 months probably its voltage went down bellow a critical point. I would...

You can choose according to your preference from that list.

You have to switch C6 in Router mode to be able to use it with OneMesh solution - reference Q8/A8

@AbhijeetSalve Here you can find the Range Extenders compatible. Since C6 is AC1200 capable, RE300 would be a good match. Keep in mind that C6 should be in Router mode - OneMesh is not supported if...

@julamee So @woozle is right. Yor public IP is different than what your router receives from nanostation and that's the reason you can't access the router. Maybe you can call your ISP and ask them to...

So this nanostation is your intermediate device.Do you have access to its web interface ? It should be on 100.xx.xxx.xxx (your router WAN IP).