Hi Mark,
maybe i can answer your question, currently the best and stable solution to built a Thread Network is to tech all devices directly too Homey! Not first over iOS / apple thread-matter and then over multi admin forwoard the device to homey. This procedure caused huge troubles in my thread network and i work weeks to come stable again…
Since i teached all devices directly into homey my thread network works stable…today i buyed some IKEA Devices…well the Grillplats did not work directly with homey, i must go the way over iOS but not via multi admin…this means i installed the ikea app on my homey pro, further i add a device over the app, and at the point where you can say “over Homey or iOS” i select iOS…this works immediately! Well after this i delete in the apple keychain the matter key and that’s it, the device itself never pop up in apple home! The Door Sensor Myggbett works directly via Homey no workaround over iOS necessary and also no Ikea Hub or anything else!
Both devices working now over thread-matter network…
Picture after add the device via iphone using iOS and delete the matter key out of the apple key chain…
In this thread you can read many important results and recommendation about thread-matter! good Luck!

