Cheap USB current/voltage monitor (UM24c) issues. Does not retain data

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I searched and even tried to send the dev a PM (He cannot receive them) so I figured i'd post here.

I've run into an issue that may have been there since day 1 but i am unsure.  When i have it in data slot 1-8 9 times out of ten it will not retain the data upon power cycle.  And when it does (rarely) it only retains the Capacity and not Energy data.  I have tried to see if there was a way to make it fail or work consistently and I've had no luck.  I try to stop the recording before disconnecting, I've tried to unplug the load before powering off, etc.   I also notice that many times even the data slot 0 won't retain the data upon reboot. I do know it overwrites the second recording is started but it rarely even saves that.

Any input?
Thanks
Dave