Unfortunately no, no serial port on the meter.
I thought of two other experiments:
The meter has no elegant failure mode for battery death right now. Maybe when you wake the meter out of standby it is browning out. Can you try a fresh set of batteries?
One other experiment you could try is downloading a tool like BLE scanner and seeing if you can connect to the meter that way. You won’t be able to start sampling, but if the meter is just randomly dropping connection with a 3rd party app that would be indicative of something inconsistent on the OS level.