st7735 only backlight

[deskcontrolset]

I've just received a 1.8" TFT SPI display from AZ Delivery (a german company). It worked great with the Arduino Uno, but after trying it with an ESP32, it's now only showing the backlight, and the measurements are off. (this is the second time something like this has happened, the wiring is correct and all lines are connected.)

Measurements:

Backlight: 3.3V
VCC: 5V
RESET Pin: Constant 5V
SCK Pin: 0.01V (constant)
SDA Pin: Fluctuates between 5.06V and 5.07V
A0 Pin: Constant 5.07V
RESET Pin (again): Constant 5.07V

I am coding in the Arduino IDE, and the code worked fine initially but now no longer works after switching to the ESP32. It is only showing the backlight now, and the measurements seem off.