EZO sensor not working

[TeRRia]

use this i2c pin define in ESPHome:
IIC SDA:GPIO16
IIC SCL:GPIO15
connect your sensor's 4 pins with i2c extender,  just need confirm your  sensor's i2c interface power voltage. suggest you take a photo of your sensor interface.

Thanks but it didn't help I am afraid.

My 2 i2c sensors work between 3 to 5v DC so they should have been detected by i2c scan.

Neither are working properly (but I can see that they are under power - green light on).

If I swap them by a PCF8574, this one is detected in the logs and works well.

See attached photos & logs for more clarity.