The delivery was faster than usual and expected. Thank you!
I use it via I2C, it's only needed to add solder jumpers on the back PCB side. Add jumpers on all the unused resistors and the one labeled I2C/SPI move to the left position - set I2C. I use the same testing program as for the cheap 0.96" OLEDs and works just fine. In the pictures I use the same program at 1MHz I2C, with STM32 Nucleo kit without any extra pull-ups so there must be present on the OLED PCB. one picture of the small OLED added just for comparison. Quite fast shipping to the EU