Hello @pierre-gilles,
Today I tried to add my first Matter device but unfortunately it didn’t work.
The device is a simple ON/OFF smart plug and I was able to add it to the official NOUS app on my phone.
In Gladys, the plug was recognized but there is no associated device in the list.
I thought ON/OFF plugs had already been integrated. If needed I can provide the JSON.
Thanks in advance for your help.
I’d like the JSON because it’s usually handled well 
Should I post it on the forum, or would you prefer that I send it to you by email or through another platform?
I don’t think that’ll pass on the forum, put a Pastebin link here 
Here is the link to the JSON:
Thanks for the JSON! Normally, that should be handled — the On/Off is perfectly standard.
I notice you have \"is_connected\": false, at the start — is the plug accessible?
Are there any errors in the logs? (Both frontend and server?)
I don’t understand, this evening the plug appears in Gladys
It’s a mystery — I didn’t do anything
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Weird, if it happens again I’d appreciate more information to help me fix it 
Glad it works in the end!
I’ll try to unplug it and see if I can reproduce it to give you more info