Just upgraded from 5.5 which was working fine and the app is unstable to the point where the initial UI often doesn't even finish drawing before it crashes. Crash report copied in below in case that is useful.
I have BT devices (cerbo GX, smartshunt, smartsolar) and VRM access as well, in case this makes a difference.
Moderator edit: added text file with service report:
service_report.txt