@Marko_M For all out there who struggles with same problem I figured out. My main deco XE75 have IoT network which I setup, then I added deco X1500, which does not support IoT Network so this network...

@SayeemAhmed Hello, I did update already to latest firmware. Thank you for replay.

I have 3 decos xe75 work great. I have Iot network turned ON. I added deco x1500 and no devices want to connect to it ? What could be the problem? I also swap location with other deco xe75. On new...