Mutlitple USB Controllers not working

Hi everyone. I have a problem when using two USB controllers. Specifically for NES and SNES. I bought USB controllers from Ebay and I configure them under the proper user fields. When I bind them, only the second one works and controls both players. Any idea how to fix this?

You’ll need to go into player 2’s binds and change the device index. There should be 2 entries in there for your identical controllers, so you need to set P1 to one and P2 to the other.