#Matter setup on HA Green fails with “Failed to connect” during initial setup

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cyan ledge
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I’m not sure whether I’m misunderstanding something, but I just bought Home Assistant Green and a ZBT-2. During the initial setup, I had no issue with most of the detected integrations, but I ran into a problem when trying to add Matter.
When it asked for the URL, I just used the default one, but it keeps saying “Failed to connect”.
My router is an ASUS RT-BE92U, and I have IPv6 enabled with the connection type set to Passthrough. Other router settings are still at their default values.
Does anyone know what might be causing this? I thought this would be more of a simple click-and-done setup, but apparently not in my case. Thanks.

Screen_Shot_2026-03-31_at_11.06.36.png
cursive mica
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You need the matter server, either via app or one you set up yourself. It seems like the integration setup process should have given you the option to install the server app