@Sergio-Rius
I ordered the pcb a few months back on dirty pcbs. That one had the MOSFET pins connected wrong, but it wasn't that difficult to turn them an discribed in the post. I am not sure if a correct one is available.

@LastSamurai Thank you very much for the update. That seems to have done the trick.

I am trying to compile this project with the 2.1.1 library, but I keep getting the errors: the 'MyTransportNRF24' does not name a type.
As far as I can see, it seems that the type is nowhere defined in the libraries.