@mpous or anyone else who might shed some light:
While the device is online - the HomeAssistant container just will not start. I tried pushing an fresh build: All three containers downloaded, and two of them started - but the HA container - still no dice.
Since I can’t connect to the container (not started) - where do I look in the Host OS for details / insights into why it’s not starting?
I stumbled upon this thread - which seemed ‘similar but different’ - and it revealed a command I would have never ‘stumbled upon’ despite decades as a unix geek and limited fluency with Docker and containers:
journalctl -au balena
Tons of stuff here - but the latest, seemingly relevant errors include:
Nov 28 19:38:52 12b11ac ade1d7b10bf1[1544]: [event] Event: Service start {“service”:{“appId”:1774679,“serviceId”:838645,">
Nov 28 19:38:52 12b11ac balenad[1544]: time=“2021-11-28T19:38:52.655491131Z” level=warning msg="Failed to allocate and map >
Nov 28 19:38:52 12b11ac balenad[1544]: time=“2021-11-28T19:38:52.992727924Z” level=error msg="bb50ff85e132078d7986308b1537d>
Nov 28 19:38:52 12b11ac balenad[1544]: time=“2021-11-28T19:38:52.993176669Z” level=error msg="Handler for POST /containers/>
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] Scheduling another update attempt in 900000ms due to failure: Error:>
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at fn (/usr/src/app/dist/app.js:6:8594)
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at runMicrotasks ()
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at processTicksAndRejections (internal/process/task_queues.js:97:>
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] Device state apply error Error: Failed to apply state transition step>
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at fn (/usr/src/app/dist/app.js:6:8594)
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at runMicrotasks ()
Nov 28 19:38:53 12b11ac ade1d7b10bf1[1544]: [error] at processTicksAndRejections (internal/process/task_queues.js:97:>
I’d be delighted to grant support access to the device, and the opportunity to learn!
Thanks in advance to any / all who might help me figure this out. Fairly desperate, at this point, just to get the config out of the device - but ideally, to ‘gracefully’ remove all my ZigBee / ZWave devices, so that I don’t have to go through the ‘–force’ mode on each of them. 
Peace.