Gen 2 Astro a50 chat problems To razer ultimate

i just just bought a razer ultimate. It does not have the hookup needed for chat on my Astro a50s, just the aux port. So I went ahead and bought a aux cord and a 2.5mm to 3.5mm adapter to plug my headset into my controller, as my headset takes a 2.5mm aux. Game volume and chat volume is still fine but I cannot get it to transmit voice so I can talk. I tried going into settings and can’t figure it out. Are these not compatible? Anyone have a similar issue or know the fix for it so I can transmit my voice?