Matter/Thread: connecting new device gets stuck in "Checking network connection"

Hello,

if yo uwant to test that your HA installation is ok, please follow the guide here :
Add devices without a phone

I tried this feature recently and it work very well !

About the thread credentials, I managed to borrow an android from a friend , installing companion app and all, and it worked at first try !

I believe the reset of thread credentials is very very glitchy and once you poison your phone it’s very hard to change them…