HomeKit more or less worked mostly reliably for me using my iPad mini as the 'hub' up until I took a trip (with the iPad) to NZ for the month of Feb. After returning home the iPad updated to 11.2.6 and ever since it only works for some time after rebooting the mini or toggling the wifi on and eventually shows all devices as 'Not Responding'. Seems to fix itself by either toggling wifi off/on or rebooting the mini but again fails after some short time. Is this a new issue from the latest iOS or is anyone else having similar issues recently? It is quite a problem as my entire condo runs on homekit automation and now nothing works most of the time. Very unreliable.