Side buttons problem

[Ted_12]

Hello, I need help. I ordered Chinese version of Razer DeathAdder Chroma for 21€ from ebay. I didn't expect it to be as original one but it has one problem. I am WoW player and I mostly hold right click when I am moving and when I am holding right click my side buttons are not working (my interrupt is bind to side button). So when I am holding right click I can't interrupt. Is there a way to make it work or is it just poor quality that doesn't support pressing 2 buttons simultaneously?

 

[luiskeniosis]

Download razer synapse to see if there's a keybinding error/glitch