I have the TX LED that lights up when I press the remote. 
But nothing is added in Gladys
To be sure about the wiring:
| Direction | VCC | DATA | GND |
|---|---|---|---|
| Reception | D16/TX2 | D19/RX1 | GND |
| Transmission | D15/RX3 | D14/TX3 | GND |
Apparently nothing in the Gladys logs or from the debug console