These Deco products really are garbage. In a lightly congested environment, there is plently of free space for Deco to use, but no. The 2.4GHz channel has opted for channel 8 & so conflicting with the

Deco supports disabling 2.4GHz and 5GHz separately under the Main/Guest/IOT networks. As for separate SSIDs over 2.4GHz and 5GHz, it might not be completed via a single network, But you could set the