Hi everyone 
I connected the Homey Energy Dongle to a Landis+Gyr E450 smart meter in the Netz Burgenland region (Austria).
Although the P1 port is activated and the encryption key is correct, I receive the error: “The Homey Energy Dongle could not connect to your smart meter.”
The same meter works flawlessly with the HomeWizard P1 Dongle, which suggests that the E450 sends a non-standard or modified P1 signal.
Can you confirm if the Homey Dongle only supports strict DSMR 4/5 protocol, and thus cannot read data from the E450 in this configuration? Is there a way to fix it?
Thanks for your support 
