that isn't an error, it's informative. Apple won't help you with uncertified accessories. But this community will. My advice, ignore it. Hubitat is working to get certification, and therefore the HomeKit Integration is waiting on Apple to do their part.
Is the issue to be resolved and the communication into Homekit is where I'd begin, assuming this is your first try using the Integration. Do you have VLANs? mDNS is needed and most VLANs kill that unless corrective efforts are made.
I have 5 Hubitat hubs using the integration as I glacially shift from HomeBridge to Hubitat Homekit Integration. I've encountered that message many times and I was just persistent.
We just moved into a new home that has a z-wave thermostat and light switch which started this endeavor. I tried the Aeotec Hub initially but found the integration to HomeKit to be frustrating. After reading about other people success with Hubitat I made the switch.
I only own a MacBook so I'm running on MacOS. My goal is to have any smart devices controlled though Apple HomeKit but I'm worried about how to accomplish this. Lack of knowledge on how to get around the "Uncertified Accessory" message.
If you have any suggestions on how I could move forward I'd be very grateful.
I hadn't read that exact documentation but was able to find a similar walk-through online. And yes, you are correct, I've basically followed the steps to integrate but just hitting a wall at the last step when I get the "Unable to Add" message, and I do not see the devices showing in the Home App.
I've tried the thermostat by itself, and the light switch switch by itself. Same message, same results. I'm still unable to get the devices to appear in the Home App.
It's a Honeywell T6 Z-wave Thermostat and a GE Dimmer light switch btw if that's helpful.