I will check in the new schematic later today, but the differences between different versions are pretty small, mainly layout changes in order to find the best way to mount the distance sensor.
If GP4 doesn’t work, try GP5 — some of the early ESP modules have swapped GP4 and GP5 (they were labeled wrong on the ESP8266 module), but this was a while back, and I assume yours (since it’s fairly recent) is not affected by this.