razer kraken pro v2 wont connect

i have a kraken razer pro v2 and i downloaded synapse to turn my microphone up on discord but it wont connect i don't know if its because of this cord divider i have that slots into my pc’s mic jack and headphone jack i also just tried connecting it straight to my pc but it still wont connect and i tried to click on compatible devices but it wont let me see it  saying that i don't have access when i am the only one on my account please somebody let me know if they have an answer