timdemand:
I tried it with your tutorial but it`s the same again it only shows "Tx failed" like the other code...
Post the two programs from my tutorial as YOU have uploaded them to YOUR two Arduinos.
Also make two pencil drawings showing how you have everything connected and post photos of the drawings.
It can help to disconnect power from the Arduino after uploading the code to ensure that the nRF24 resets. The normal Arduino reset does not reset the nRF24.
Do you have a 3rd nRF24 that you could use to verify if either of the first pair is broken?
...R