Using pin 6 for I2C

[boatybits]

Hi, I have just received a ESP8266 board with combined OLED display >
https://www.ebay.co.uk/itm/175623061748
Loaded micropython on to it which seems to work fine. Problem is the listing says SCL is on pin 6 (gpio12) which returns an error if used as a pin or SDA . The board comes with a demo loaded which I'm guessing is using arduino C++, there some links for the arduino libraries but google/chatgpt didn't come up with any micropython demo code. Looks like the 8266 uses pin 6 for something internal, any ideas? If it can work with arduino code I'm hoping micropython can as well. TIA

Edit - Sorry, wasn't using GPIO numbers for the pins, no errors now