Razer THRESHER Tournament Edition - No audio (Solved)

Hey! Edit: Solved. I had to specifically choose headset from Windows' prompt when plugging in. Thresher isn't Synapse compatible neither so registering it is pointless. ___ In 2019, I bought a Razer THRESHER Tournament Edition headset on Amazon. Brand new. For some reasons it worked well on my old computer without extra measures. This morning, I came to plug the headset into my new computer I received last week and it wasn't being recognized. I don't have any "RAZER headset driver" among my devices in Device Manager neither (should there be?). As such, I don't have any audio. I launched Synapse and realized the headset weren't among my registered devices. I guess it didn't cross my mind I had to register a headset back then for it to work properly?... I assumed I could just plug'n'play. So I went to register it but despite writing the proper serial ID and product number (RZ04-02350100-R3U1), the website refuses to register it. Tried to contact support, wrote my serial number on their website and I was told by their system:

Your product is no longer covered by Razer's Limited Warranty. Product: Razer Thresher Tournament Edition Your product is out of limited warranty and ineligible for free support.

So... What now?