Polk Command Bar Alexa Functionality

On my Command Bar, the Alexa functionality is awful!

If we set timers the alert never goes off

Smart home devices aren't controlled. For example, we have Philip's Hue lights in the living room and kitchen. Controlling the living room lights works fine, but controlling the kitchen lights does not ("the hub the device kitchen connected to is not responding, please check its network connection and power supply"). If I try from another Alexa, it works with no issues.

I have tried a factory reset and reconfigured the device, I even sent it back to Polk to be checked but they said no issues could be found. Also tried re-installing firmware, powering on and off, even resetting the affected devices but nothing.