Modest maker and 3D Printing Enthusiast at home. If you own a Creality printer, I designed the little thing that hold your heat bed cable.
In the way it is written in the pins file, you can only use a BL Touch with sensorless homing. I don't know if this is an actual limitation of the board SERVO0_PIN needs to be defined but on which connector do you plug the BLTouch on the Retro?
"DIRECTIVE (EU) 2015/2436 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 December 2015 to approximate the laws of the Member States relating to trade marks" EU strikes you again mate 🙄 Damned 😂🤣😂 !