I have a raspberry Pi 3B+ board connected to an ADS1115 analog-to-digital converter. 2 load cells are attched to the same ADS1115(pins 0-1 and 2-3). I can individually calibrate/read weights from both load cells (scale 1 & 2) using Adafruit_CircuitPython_ADS1x15 python library (https://github.com/adafruit/Adafruit_CircuitPython_ADS1x15). But, when I try to read two scales simultaneously, both scales display the weight in scale 2. I can neither calibrate nor read weight from scale 1. I tried SINGLE mode and CONTIONOUS mode. I got measurements after a delay, still no luck.
Any ideas, what may cause the issue?