@rjadev, Hi, welcome to the forum. Please read How to get the best out of this forum.
Please don't hijack an existing and solved topic, for a question only slightly related to that topic.
You just need to adapt the constructor parameters to your changed wiring in the example.
Note that SPI pins CLK and MOSI can't be changed; GxEPD2 uses the default HW SPI pins.
Jean-Marc