Hi,
Thanks for the update. I’m very glad your OLA is up and running again.
Please be careful with the Arduino Uno. If is is an original Uno, it is a 5V board. The I2C IO connections are 5V. The KX134 is 3.3V. That might explain why the KX134 not working with that board. Or, yes, you may have a bad board.
Please let me know if you need more help or advice.
Best wishes,
Paul