We are currently pushing this minor release to the estate.
It fixes the issue that a few customers had with local mqtt client not connecting.
I will advise when the rollout is complete.
Works for me: My Glow is running 1.9.1 and I'm trying to connect it to MQTT (Mosquitto running as a Home Assistant add-on) for the first time.
It works now that I've realised that *I needed to move my Glow from the guest wifi (clients isolated from the local network) onto my normal/trusted wifi network*.
SMETS2 rollout is complete - now doing SMETs1
SMETS1 rollout also complete.