Android 7 - Home Assistant App functional - but Zigbee2Mqtt complains about certificate

Hi there,

I have a nice old phone with Android 7 and I’ve installed Home Assistant.
I only use Wi-Fi home network with this unit.
Everything works except for the Zigbee2MQTT menu item.
Here, I get a message saying I should check the Home Assistant certificate.
I can choose settings.
Companion App >> Add Server >> Automatically search on home network. I’ve entered my HA server there. Unfortunately, this doesn’t help.

Can anyone help me?

THANK YOU!

If you use a lets encrypt certificate, then they switched root certificate a little while back.

This is your phone that needs to have its root certificates updated and it is not really related to HA or Z2M. They just use the certificate system.

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