Lanbon 4 way light switch (not 3 way)

[acabrele]

I have a version of the lanbon L8 switch, but with 4 light relays instead of 3. All 4 relays fire with the original firmware.

I have been trying to build a version of openhasp with the additional L4 GPIO and/or add it to the webUI configuration/GPIO section but have not had any luck. I know that the GPIO pin is pin 15, as advised by the manufacturer. They also confirmed 12,14 and 27 are the existing pins, which I already knew.

I have tried adding pin 15 output like the other 3 but with no luck. I have also tried adding pin -D RELAY_4 to the lanbon build (and associate line in hasp_gpio.cpp). But no luck.

What am I missing?