Siri not recognizing HomeKit lights

Siri does not recognize HomeKit lights.

I, the Home owner in the Home app, can not control my lights via Siri. Whereas my husband who I’ve added to the Home can control the lights with Siri. When asking Siri to turn the lights on/off I’ll receive a notification saying that no accessories have been setup in home and to open the app for more information. I have poured over the home settings, Siri settings, and iCloud but can not find anything that would be prohibiting me. I can control the lights via the app or widget.

My husband has an iPhone 15 running the latest iOS 18. I have an iPhone 16 running the latest iOS 26 beta. I have had this issue on iOS 18 prior to iOS 26 release.

I have recently replaced the lights due to a flickering issue they had hoping it would solve the issue but it did not.