About a few weeks ago, the 5Ghz signal just started dropping. The LED light stays on and when I go to the DumaOS dashboard, it is showing that the 5Ghz is enabled. But none of my devices see it. I've restarted the router, I've re-uploaded the latest firmware, and I've done a factory reset, still doesn't help. The 5Ghz signal would like a few hours, and then it's gone. Hope this is the right place for someone to help me.