I just purchased a BE550 and am encountering an issue with 6GHz network. I have 3 6E compatible devices. All 3 can see my 6GHz SSID when channel width of 20/40/80/160MHz is selected but when I select 20/40/80/160/320MHz channel width, all 3 of my 6E devices stop being able to connect to or even see the 6GHz SSID. I have tried manually setting the Channel from Auto to 37, 69, etc with PSC on or off as well as with MU-MIMO on and off and no combinations allow my 6E devices to see or connect to 6GHz unless I change the Channel width back to 20/40/80/160MHz.