If (
if) the issue is related to your handset software (and it does seem as though you're getting closer and closer to drawing that conclusion), rather than to the Mojo hardware itself, then perhaps Chord simply do not have the identical set-up available to them, in order to investigate and troubleshoot it?
I'm not making excuses for Chord - I'm just offering one potential mitigating reason why they may not,
yet, have replied to you about your particular issue.
Additionally, I have followed all 812 pages of this thread, since day 1, and the percentage of people experiencing anything like you've described, with Android+Mojo, is tiny. That doesn't mean your frustration is unfounded, but please have some patience in getting this sorted, rather than being too hasty to feel that Chord have made a poorly-engineered product