Razer Naga Classic button changed function

Hi, I have owned this razer Naga for like 10 years and never had any issues, but recently I plugged it (cant remember if it was on my Mac or PC) and suddenly the buttons changed fonction. The left one is now scrolling and the right one I am not pretty sure. I have tried to use the Synapse app to reset the button functions but it does do anything. so it has basically become completely useless for anything. I apologize if there is already a thread for that problem but I could not find anything. Does anyone have the same problem and would know how to fix it ? Thanks a lot for your help