I had the same problem with "Emakefun LGT-RF-Nano für Arduino Nano V 3,0 RF-NANO LGT8F328P Integrieren NRF24l01 + Micro USB Nano Bord mit Antenne Interface"

Using the default Compiler the Serial Messages were not working properly.

I used this https://github.com/nulllaborg/arduino_nulllab Board Package and it worked(at least the serial issue). The rest I still need to test.

I hope this helps some hours of trouble.