I’ve had a similar experience a couple times with my Trailblazer (Though not quite that extreme). I believe the issue is ash buildup in the fire pot. That allows it to smolder then as some other poster noted, the gases and/or heated fuel ignites. I now make sure that ash is minimal in the fire...
The new version worked great on my iPhone during my first post-upgrade cook. I love the new temperature chart and ability to adjust by pinching. The old version of the chart wouldn't work for me at times.
Skills required to design and manufacture stainless grills sre very different than managing and scaling a cloud computing environment. They should outsource and/or host on something scalable like AWS. I would prefer mine to work within my WiFi only and not talk to outside servers, but that would...