I have a new "433 bridge" an try to pair.
I popup claims that it only supports 2.4G WIFI.
The device is nearby a FritzBox 7490 supporting and sending 2.4.G - definitly! I checked it with different Wifi-Analyser - My Network is running mainly 2.4G - not 5.0. But both are available.
I have some other devices running without problems.
What is the reason for this message? How to fix?