i2c address instead of assigning pins
How do I change the code to be able to use the hardware address instead of the Data, Load and CLK pins?


That is not possible as this is two totally different LED drivers. MAX72XX uses a protocol with those signals, while the dot-matrix LED display uses I2C. 

You can always port the library to the dot-matrix. Or rewrite the sketch with the dot-matrix library. 

Cheers!