Problem with external EEPROM

#1

Hello,
I would like to read the LoRa connection settings of a CubeCell from an external EEPROM I2C but I am having a problem.
I can write the parameters but not read them with a CubeCell. If I use the example I2C scan I cannot see the I2C address of the EEPROM. I did the test with an ARDUINO UNO and it works but not with a CubeCell.
I use the extEEPROM.h libraries (https://github.com/JChristensen/extEEPROM) and Streaming.h with EEPROM 24AA512 (https://www.microchip.com/en-us/product/24AA512)
Do you have any idea where the problem might come from?
Thank you in advance

#2

If you don’t even have an address, you need to pay attention to whether there is a problem with the power supply.