Why can't I see what you described in the log I shared here (the highest numbered one?) Since the drone and the controller still communicated after the crash and I turned it back on to double check the battery charge, (my first fear), that may account for what you are saying. Something was seriously wrong in more aspects than one if it didn't show the altitude gained. My guess is that the info needed is in the previous file rather than the highest number one. (In this case.)
I'd already done as you suggested regarding the log, but I'm not sure about the compressing part. I'll do some more looking at that. Still no email back from Yuneec.
Thanks for the suggestions.
That 000019.csv from the telemetry folder would descibe what you did after the crash.
Are you using Windows 8 or 10? the Zip program is built into the shell in those versions and is accessible by selecting what you want zipped and right clicking, then selecting the Send to... menu, then selecting Compressed.
If we have the files from at least the Telemetry and the Remote folders, we will be able to have a good idea of what went wrong.
Eagle Eye is right about email response from Yuneec CS. It is best to call or chat.