New Razer Blackshark V3 Pro's left headphone will not play audio.

Hello, the title’s pretty self-explanatory, but here’s the detailed version.
I’d basically just bought this brand-spanking new Razer Blackshark V3 after some unfortunate mishaps with my previous headset. I’m noticing that today, the left headset won’t work, no matter which mode I set it to. I’ve set it on both wired and bluetooth, connected via the dongle. I’m seeing people say that I should adjust the levels of each headphone through my computer’s sound settings, but there’s no option to do so at all, and even after updating firmware it doesn’t help. What step should i take going forward?