Thank you so much Peter, solution B. worked like a charm, I even disabled thread on my Google streamer, shut it down, as well as my dirigera.
I setup my new homey 2026, then restored a fresh back up of my old homey 2019, first think I did what to check Homey Settings - > Thread and it was all good (Preferred Thread Network Available and Homey’s Thread Network Available). Unfortunately, I did not think or making a screenshot at that point.
Then I went to check my old devices, but they were all in error, complaining app was not available, so I proceeded to reinstall all apps by clicking on each ‘no name app’, going to store and it could still find out which app then install it, one by one…
After all this, still none of my devices would work. Until I realise I did not shutdown the old Homey 2019. Thinking they might conflict on zigbee and zwave, I shutdown old Homey 2019, factory reset new homey 2026, setup then restored same fresh backup from old Homey 2019, this time all apps installed automatically and all my zigbee and zwave devices working fine.
Back to Homey Settings - > Thread but this time all wrong (Preferred Thread Network NOT Available and Homey’s Thread Network NOT Available). See screenshot 1:
Checking Android says preferred network Homey Pro but not TBR (While my Homey is on), see screenshot 2:
Going back to homey, this time it says Preferred Thread Network NOT Available but Homey’s Thread Network IS AVAILABLE. Both have same name but different extended pan ID:
Any idea or suggestion? It looks like I am stuck with a ghost version of my old thread network created at first install, but factory reset was supposed to wipe out thread settings too, or at least I though 
Off to bed now, will continue tomorrow…
Marc
