For any I2C device the first thing I do is run the I2C scanner. It can be found in an Arduino that you have to add.
Go to Library Manager and search for "I2C Scanner" It will come up a few libraries down from the top.
I use this program every time I attach an device to my Arduino. In the past I've spent too much time troubleshooting code only to find the devices isn't communicating.
The program will Scan through all the I2C addresses and list the addresses of any device properly communicating over the I2C bus.