AUKEY EP-T27 microphone not showing in Linux

Hi, I’ve successfully paired my EP-T27 headphones with my laptop running Arch Linux (latest) and GNOME. I can hear music and voice however the microphone doesn’t show up in input devices.
On Bluetooh settings I see

AUKEY EP-T27 L
AUKEY EP-T27 R

AUKEY EP-T27 R only can be paired / connected but when I connect it, the LH headphone connects as well. No microphone is shown at all and I can only select the laptop internal mic.
Can you please help me?