Here are the steps I followed:

1. Short-circuit the‘ S’ contact point with solder (according to the datasheet) to use SPI as the communication protocol
2. Connect LCD’s SPI interface (JP2 pins 3 – 5) to WT32-ETH01 GPIO pins using jumper cables
3. Connect LCD’s power supply (JP2 pins 1 & 2) to the system’s 5V & ground rails.
4. In the Arduino IDE, import the u8g2 libraryusing the ‘library manager’
5. Open File -> Examples -> U8g2 (under Examples from Custom Libraries) -> full_buffer -> HelloWorld
6. Uncomment the correctconstructor (shown below) and change the pins to match the WT32-ETH01 connections.