I tested again last night. Basically regardless bandwidth and channel, both my laptop and phone can't pick up any 5GHZ signal, not sure what changed this time. And the led of the 5GHZ is clear on
Also went a test from this tool...
I tried different channels to test it out. Around 100 to 160 (can't remember the specific channel number), my laptop seem to pick up tiny 5ghz signals but not my phone, Even they are right next to each others.
I don't think I touch the AIcloud setting, is it enabled by default. But ill look into the thread you given
How can i tell my units are attacked? and Any remedy to it?
The current FW is 3.0.0.4.388_25024.
The 2 units are connected through back-haul
Two three months ago, the one that setup as main failed (no 5ghz) right before it fail it was using asus merlin (can't record the FW number). Then I use the node (another AX82U) as main and AC1900 as node. After...
Short Story: I have 2 AX-82U, and they both have the same issue where 5ghz stopped working completely
Long Story: 2 router meshed together to cover my whole house. The 5ghz failed back to back. Very frustrated! Everything else work, except the 5ghz.
I am tried to figured out what is going on...