@jkandasa Logs sent and reply received.
One thing I forgot to mention was that upon a reboot of the pi, one GW would have the sensor of the other GW in it's list but without any details or data.
They GWs are on different RF channels 10MHz apart and different USB ports (USB0 and USB1) so I am not sure why this happens.. It is always the second GW that seems to get the 'ghost' data intended for the first GW, never the other way around.
@jkandasa Thanks for the response - I have had to reboot several time so would the logs still have what you want? IF so I can send to you.
Also it happens on either GW, not just one so I'll enable those logs for both if that's OK?
Maybe I next need to try the optiboot loader. Would it conflict with signing or encryption at all? AFAIK you can 'only' upload new firmware vie FOTA and not via a programmer once you take that step, is it true?
Does FOTA play nice with signing nodes and encrypted nodes?
Thanks 
Happened again and this time it just got a little more weird - now in resources it shows that the GW is up, data is received but the nodes and sensors show no data. But look at the GW in the topography view and it is down. Check again in the resources window and it shows as up. Now I am really confused!
The sensor values do not get updated.
The video seemed the best way to clearly show what has happened as it's a pain to explain in detail 
If I can show anything more on the next video let me know and I will do it, just have to wait until the next 'crash'!
What bootloader do you use for your nodes and for your gateway? Maybe there is something in there worth exploring?
@fsgrazzutti Great work! - Thanks for sharing so others won't have the same problem!
https://www.youtube.com/watch?v=1lw4hX9IswA
To me it seems like the GW is up, data is being received by the GW and passed to my but all the nodes are showing as down.
The GW up times are all different so it seems that they are spontaneously rebooting for some reason. But that's another issue
Hi pw44,
Have you checked of the issue changes if you connect to https://<local-ip>:8443
I mean not using localhost... but the real ipaddess of the machine?
@jkandasa That clears up my confusion on that, almost....
So why do I see both GW in resources->gateways, but only one shows in resources->nodes? I can't figure out what is going on here......