Thanks all. The reason I need to turn 5GHZ off is due to issues connecting a Yamaha WXA-50 remote amplifier to my Yamaha network. The app powers the speakers in an entertainment area outside. You have to create the “zone” on the Yamaha MusicCast app on my iPhone to be able to control the zone. The WXA runs on 2.4ghz only. Working with the local Yamaha rep we discovered I had to firstly only have 1 AP running and secondly only have that AP running on 2.4GHZ. Once the zone is created I can turn all the AP’s back on as well as 5GHZ. In essence a combination of Apple, Yamaha & Meraki makes for a less than optimal experience. Still working on it as unlike the last time the app lost the zone this work around did not work yesterday and I still can’t create the out door zone as everything is handshaking, the dashboard shows the WXA is connected to the AP but the Apple devices just can’t finish the process, or the WXA or who knows. Very frustrating. Hope that makes sense.