I’m a bit confused, you get lots of help offered, i.e. mr. @Sharkys is very much trying to help you, but you keep ignoring or don’t understand some of his questions.
He doesn’t ask to annoy you.
So, a big chunk of info I still miss is this:
Did you try this proven workaround or didn’t you:
Interference!
You replied
I cannot believe you did not check, while Ikea probably uses a different channel.
Homey’s zigbee channel might be interfered (badly) by using the wrong zigbee or wifi channel
