Use #support channel in Signal K Slack (get an invite).
Get a log of your NMEA2000 bus data with something like /usr/lib/node_modules/signalk-server/node_modules/canboatjs/bin/actisense-serialjs /dev/ttyUSB0 > /tmp/actisense.log.
Share the resulting file, preferably via Dropbox, Google Drive, Github Gist or something similar so that you can just share the url.