Mine is very unpredictable. 5GHz will be enabled consistently for weeks, and then become disabled again without notice. I'm on 1.0.6 and I see there are no updates since that. Not sure!

@Riley_S Thanks for the reply...I've had "Smart Connect" enabled so I only see the one SSID.

Using RE815XE range extender in a OneMesh configuration with the AX11000 TP-Link router (latest firmware). I can get 2.4GHz fine, but not 5GHz. The extender is about 15 feet away from the router at...