@Solla-topee What are the hardware and firmware version about RE300? 1.05 Build 2019114 Rel 34543 Did you mean when the 5ghz disconnected and LED light off, the only way to recover the 5ghz...

@Solla-topee The extender only can detect the 5G for a short while(1-2 days) then it will be gone every time I reset it. I tried change the home router channel to both 36 and 40 but still the same....

My RE300 currently cant detect the 5G network, it was ok 2days ago. i have try to restart and reset the device but still not working. What can i do to resolve the issue? Thanks.