My phone on the 5Ghz Wi-Fi network does not see Kello

Most routers now offer two frequencies: 2.4 GHz and 5 Ghz.

Kello connects to the 2.4 GHz band. Your phone may connect to either.

To make sure your phone sees Kello, you need to make sure that AP isolation is disabled in your router settings. This makes sure that both 2.4 GHz and 5 GHz frequencies communicate with each other.

For more details please refer to this article.