Problem with arduino PS2X livrary receiver Answered

Hi! I' ve been using a ps2 wireless controller with arduino with the PS2X library for 3 days and it worked fine. After that i've tried to move the wiring to an arduino nano instead of the uno and it didn't work. Then I went back to the uno and realised that the receiver doesn't work anymore with the code. Cand someone help me? It says in the serial monitor" controller not found" . The receiver works fine on PC.