MDAR
21
It might be my fault for being slightly inaccurate
Try this instead
tls://velbus@
dietPi LAN IP :27015
Or
tls:velbus@
dietPi LAN IP :27015
Add the Double back slash & Machine LAN address.
As I say, I’m no expert with HomeAssistant.
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The HomeAssistant container won’t work with the 127.0.0.1 / loopback address
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If you were using the loopback address with another program, the port is 6000 without TLS & passcode
Others have got to the same point as you.
Does this help ??